diff --git a/VERSION.properties b/VERSION.properties
index eb33f7c..ca6e7a3 100644
--- a/VERSION.properties
+++ b/VERSION.properties
@@ -1,2 +1,2 @@
-client.version=1.2.4
-server.version=1.2.4
+client.version=1.2.5
+server.version=1.2.5
diff --git a/shine-UI/index.html b/shine-UI/index.html
index 5c9d7cf..48869dd 100644
--- a/shine-UI/index.html
+++ b/shine-UI/index.html
@@ -6,8 +6,8 @@
     <link rel="manifest" href="./manifest.webmanifest" />
     <title>Shine UI Demo</title>
     <script>
-      window.__SHINE_BUILD_HASH__ = '20260426011500';
-      window.__SHINE_CLIENT_VERSION__ = '1.2.4';
+      window.__SHINE_BUILD_HASH__ = '20260426025000';
+      window.__SHINE_CLIENT_VERSION__ = '1.2.5';
     </script>
     <script>
       (function attachStylesWithBuildHash() {
diff --git a/shine-UI/js/components/avatar-wizard.js b/shine-UI/js/components/avatar-wizard.js
new file mode 100644
index 0000000..056f330
--- /dev/null
+++ b/shine-UI/js/components/avatar-wizard.js
@@ -0,0 +1,436 @@
+import { getArweaveBalance, getArweaveWalletFromStoredDeviceKey } from '../services/arweave-wallet-service.js';
+import {
+  buildArweaveDataUrl,
+  getArweaveUploadPrice,
+  prepareAvatarImageFile,
+  uploadArweaveFile,
+  validateArweaveTxId,
+  validateAvatarSourceFile,
+} from '../services/arweave-file-service.js';
+import { saveProfileAvatarArweave } from '../services/user-profile-params.js';
+
+function escapeHtml(text) {
+  return String(text || '')
+    .replaceAll('&', '&amp;')
+    .replaceAll('<', '&lt;')
+    .replaceAll('>', '&gt;')
+    .replaceAll('"', '&quot;')
+    .replaceAll("'", '&#39;');
+}
+
+function formatBytes(bytes) {
+  const value = Number(bytes || 0);
+  if (!Number.isFinite(value) || value <= 0) return '0 B';
+  if (value < 1024) return `${value} B`;
+  if (value < 1024 * 1024) return `${(value / 1024).toFixed(1)} KB`;
+  return `${(value / (1024 * 1024)).toFixed(2)} MB`;
+}
+
+function formatAr(ar) {
+  const n = Number(ar);
+  if (!Number.isFinite(n)) return '0';
+  return n.toLocaleString('ru-RU', { maximumFractionDigits: 6 });
+}
+
+function clearJwk(ctx) {
+  if (!ctx?.jwk || typeof ctx.jwk !== 'object') return;
+  Object.keys(ctx.jwk).forEach((key) => {
+    ctx.jwk[key] = '';
+  });
+  ctx.jwk = null;
+}
+
+function setNodeText(node, text) {
+  if (node) node.textContent = String(text || '');
+}
+
+export function openAvatarWizard({
+  login,
+  storagePwd,
+  gateway,
+  navigate,
+  onAvatarSaved,
+  onStatus,
+} = {}) {
+  const root = document.getElementById('modal-root');
+  if (!root) return Promise.resolve(false);
+
+  const cleanLogin = String(login || '').trim();
+  const cleanStoragePwd = String(storagePwd || '').trim();
+  const cleanGateway = String(gateway || '').trim();
+  if (!cleanLogin || !cleanStoragePwd) {
+    return Promise.reject(new Error('Нет активной сессии.'));
+  }
+
+  let closed = false;
+  let lastPreviewUrl = '';
+  let walletCtx = null;
+  let balanceInfo = null;
+  let optimized = null;
+  let priceInfo = null;
+  let uploadedTxId = '';
+
+  function revokePreviewUrl() {
+    if (!lastPreviewUrl) return;
+    URL.revokeObjectURL(lastPreviewUrl);
+    lastPreviewUrl = '';
+  }
+
+  function close(result = false, resolve) {
+    if (closed) return;
+    closed = true;
+    revokePreviewUrl();
+    clearJwk(walletCtx);
+    walletCtx = null;
+    root.innerHTML = '';
+    resolve(result);
+  }
+
+  async function ensurePreviewImage(url, imageEl) {
+    return new Promise((resolve, reject) => {
+      const img = imageEl;
+      img.onload = () => resolve(true);
+      img.onerror = () => reject(new Error('Не удалось загрузить изображение по этому Transaction ID'));
+      img.src = url;
+    });
+  }
+
+  return new Promise((resolve) => {
+    const showStepChoice = () => {
+      if (closed) return;
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Сменить аватар</h3>
+            <p class="meta-muted">Вы можете использовать уже загруженный файл Arweave или загрузить новый файл.</p>
+            <div class="avatar-wizard-choice-grid">
+              <button class="primary-btn" type="button" data-action="use-existing">Использовать существующий файл в Arweave</button>
+              <button class="primary-btn" type="button" data-action="upload-new">Загрузить новый файл в Arweave</button>
+              <button class="secondary-btn" type="button" data-action="cancel">Отмена</button>
+            </div>
+          </div>
+        </div>
+      `;
+      const modal = root.querySelector('[data-avatar-wizard-modal="true"]');
+      modal?.addEventListener('click', (event) => {
+        if (event.target === modal) close(false, resolve);
+      });
+      root.querySelector('[data-action="cancel"]')?.addEventListener('click', () => close(false, resolve));
+      root.querySelector('[data-action="use-existing"]')?.addEventListener('click', showStepExistingInput);
+      root.querySelector('[data-action="upload-new"]')?.addEventListener('click', () => { void showStepUpload(); });
+    };
+
+    const showStepExistingInput = () => {
+      if (closed) return;
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Использовать существующий файл в Arweave</h3>
+            <label class="meta-muted" for="avatar-existing-txid">Transaction ID Arweave</label>
+            <input class="input" id="avatar-existing-txid" type="text" maxlength="64" placeholder="Введите Transaction ID" />
+            <p class="avatar-wizard-error" data-error="true"></p>
+            <div class="avatar-wizard-actions">
+              <button class="secondary-btn" type="button" data-action="back">Назад</button>
+              <button class="primary-btn" type="button" data-action="next">Далее</button>
+            </div>
+          </div>
+        </div>
+      `;
+      const modal = root.querySelector('[data-avatar-wizard-modal="true"]');
+      const inputEl = root.querySelector('#avatar-existing-txid');
+      const errorEl = root.querySelector('[data-error="true"]');
+      modal?.addEventListener('click', (event) => {
+        if (event.target === modal) close(false, resolve);
+      });
+      root.querySelector('[data-action="back"]')?.addEventListener('click', showStepChoice);
+      root.querySelector('[data-action="next"]')?.addEventListener('click', () => {
+        const txId = String(inputEl?.value || '').trim();
+        if (!validateArweaveTxId(txId)) {
+          setNodeText(errorEl, 'Некорректный Transaction ID Arweave.');
+          return;
+        }
+        setNodeText(errorEl, '');
+        void showStepExistingPreview(txId);
+      });
+      window.setTimeout(() => inputEl?.focus(), 0);
+    };
+
+    const showStepExistingPreview = async (txId) => {
+      if (closed) return;
+      const previewUrl = buildArweaveDataUrl({ gateway: cleanGateway, txId });
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Предпросмотр аватара</h3>
+            <div class="avatar-preview-circle avatar-wizard-preview">
+              <img alt="Предпросмотр аватара" data-preview-image="true" />
+            </div>
+            <p class="meta-muted">После сохранения в профиль будет записан только Transaction ID. Сам файл хранится в Arweave.</p>
+            <p class="avatar-wizard-error" data-error="true"></p>
+            <div class="avatar-wizard-actions">
+              <button class="secondary-btn" type="button" data-action="back">Назад</button>
+              <button class="primary-btn" type="button" data-action="save">Сохранить аватар</button>
+            </div>
+          </div>
+        </div>
+      `;
+      const modal = root.querySelector('[data-avatar-wizard-modal="true"]');
+      const imageEl = root.querySelector('[data-preview-image="true"]');
+      const errorEl = root.querySelector('[data-error="true"]');
+      const saveBtn = root.querySelector('[data-action="save"]');
+      modal?.addEventListener('click', (event) => {
+        if (event.target === modal) close(false, resolve);
+      });
+      root.querySelector('[data-action="back"]')?.addEventListener('click', showStepExistingInput);
+      if (saveBtn instanceof HTMLButtonElement) saveBtn.disabled = true;
+
+      try {
+        await ensurePreviewImage(previewUrl, imageEl);
+        if (saveBtn instanceof HTMLButtonElement) saveBtn.disabled = false;
+      } catch (error) {
+        setNodeText(errorEl, 'Не удалось загрузить изображение по этому Transaction ID');
+        if (saveBtn instanceof HTMLButtonElement) saveBtn.disabled = true;
+      }
+
+      saveBtn?.addEventListener('click', async () => {
+        try {
+          await saveProfileAvatarArweave(cleanLogin, txId);
+          if (typeof onAvatarSaved === 'function') await onAvatarSaved();
+          close(true, resolve);
+        } catch {
+          setNodeText(errorEl, 'Не удалось сохранить аватар в профиль.');
+        }
+      });
+    };
+
+    const showStepZeroBalance = () => {
+      if (closed) return;
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Недостаточно средств</h3>
+            <p class="meta-muted">У вас нулевой баланс Arweave. Для загрузки аватара нужен AR.</p>
+            <div class="avatar-wizard-actions">
+              <button class="primary-btn" type="button" data-action="to-wallet">Перейти в кошелёк</button>
+              <button class="secondary-btn" type="button" data-action="cancel">Отмена</button>
+            </div>
+          </div>
+        </div>
+      `;
+      root.querySelector('[data-action="to-wallet"]')?.addEventListener('click', () => {
+        close(false, resolve);
+        if (typeof navigate === 'function') navigate('wallet-view');
+      });
+      root.querySelector('[data-action="cancel"]')?.addEventListener('click', () => close(false, resolve));
+    };
+
+    const showStepUploadForm = () => {
+      if (closed) return;
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Загрузить новый файл в Arweave</h3>
+            <p class="meta-muted">Баланс: ${formatAr(balanceInfo?.ar)} AR</p>
+            <label class="meta-muted" for="avatar-file-input">Выберите изображение</label>
+            <input class="input" id="avatar-file-input" type="file" accept="image/jpeg,image/png,image/webp" />
+            <p class="meta-muted">Поддерживаются JPEG, PNG, WebP. Максимальный исходный файл — 10 MB. Перед загрузкой изображение будет уменьшено для аватарки.</p>
+            <div class="avatar-preview-circle avatar-wizard-preview" hidden data-preview-wrap="true">
+              <img alt="Предпросмотр аватара" data-preview-image="true" />
+            </div>
+            <div class="avatar-wizard-meta" data-meta="true"></div>
+            <p class="meta-muted">После сохранения в профиль будет записан только Transaction ID. Сам файл хранится в Arweave.</p>
+            <p class="avatar-wizard-error" data-error="true"></p>
+            <div class="avatar-wizard-actions">
+              <button class="secondary-btn" type="button" data-action="back">Назад</button>
+              <button class="primary-btn" type="button" data-action="upload" disabled>Загрузить в Arweave</button>
+            </div>
+          </div>
+        </div>
+      `;
+
+      const modal = root.querySelector('[data-avatar-wizard-modal="true"]');
+      const fileInput = root.querySelector('#avatar-file-input');
+      const errorEl = root.querySelector('[data-error="true"]');
+      const metaEl = root.querySelector('[data-meta="true"]');
+      const previewWrap = root.querySelector('[data-preview-wrap="true"]');
+      const previewImage = root.querySelector('[data-preview-image="true"]');
+      const uploadBtn = root.querySelector('[data-action="upload"]');
+
+      let selectedFile = null;
+      optimized = null;
+      priceInfo = null;
+
+      modal?.addEventListener('click', (event) => {
+        if (event.target === modal) close(false, resolve);
+      });
+      root.querySelector('[data-action="back"]')?.addEventListener('click', showStepChoice);
+
+      fileInput?.addEventListener('change', async () => {
+        setNodeText(errorEl, '');
+        setNodeText(metaEl, '');
+        uploadBtn.disabled = true;
+        revokePreviewUrl();
+
+        selectedFile = fileInput.files?.[0] || null;
+        if (!selectedFile) {
+          setNodeText(errorEl, 'Выберите файл изображения.');
+          return;
+        }
+
+        try {
+          validateAvatarSourceFile(selectedFile);
+          optimized = await prepareAvatarImageFile(selectedFile);
+          priceInfo = await getArweaveUploadPrice({
+            gateway: cleanGateway,
+            byteLength: optimized.file.size,
+          });
+
+          lastPreviewUrl = URL.createObjectURL(optimized.file);
+          previewImage.src = lastPreviewUrl;
+          previewWrap.hidden = false;
+
+          const hasFunds = BigInt(balanceInfo.winston) >= BigInt(priceInfo.winston);
+          metaEl.innerHTML = `
+            <div>Исходный размер: ${escapeHtml(formatBytes(optimized.originalSizeBytes))}</div>
+            <div>Итоговый размер: ${escapeHtml(formatBytes(optimized.optimizedSizeBytes))}</div>
+            <div>Итоговое разрешение: ${escapeHtml(`${optimized.width} × ${optimized.height}`)}</div>
+            <div>Тип файла: ${escapeHtml(optimized.contentType)}</div>
+            <div>Примерная цена загрузки: ${escapeHtml(formatAr(priceInfo.ar))} AR</div>
+          `;
+
+          if (!hasFunds) {
+            setNodeText(errorEl, 'Недостаточно средств для загрузки.');
+            uploadBtn.disabled = true;
+            return;
+          }
+          uploadBtn.disabled = false;
+        } catch (error) {
+          const message = String(error?.message || '');
+          if (message === 'Выберите файл изображения.' || message === 'Поддерживаются только JPEG, PNG или WebP.' || message === 'Файл слишком большой. Максимум 10 MB.') {
+            setNodeText(errorEl, message);
+          } else if (message.includes('цену загрузки')) {
+            setNodeText(errorEl, 'Не удалось получить баланс Arweave.');
+          } else {
+            setNodeText(errorEl, 'Не удалось подготовить изображение.');
+          }
+        }
+      });
+
+      uploadBtn?.addEventListener('click', async () => {
+        setNodeText(errorEl, '');
+        if (!optimized?.file) {
+          setNodeText(errorEl, 'Выберите файл изображения.');
+          return;
+        }
+        if (!priceInfo || BigInt(balanceInfo.winston) < BigInt(priceInfo.winston)) {
+          setNodeText(errorEl, 'Недостаточно средств для загрузки.');
+          return;
+        }
+
+        uploadBtn.disabled = true;
+        try {
+          const uploaded = await uploadArweaveFile({
+            gateway: cleanGateway,
+            jwk: walletCtx?.jwk,
+            file: optimized.file,
+            tags: [
+              { name: 'SHiNE-Login', value: cleanLogin },
+            ],
+          });
+          uploadedTxId = String(uploaded.id || '').trim();
+          if (!uploadedTxId) {
+            throw new Error('Пустой Transaction ID');
+          }
+          showStepUploaded();
+        } catch {
+          setNodeText(errorEl, 'Не удалось загрузить файл в Arweave.');
+          uploadBtn.disabled = false;
+        }
+      });
+    };
+
+    const showStepUploaded = () => {
+      if (closed) return;
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Файл загружен в Arweave</h3>
+            <p class="meta-muted">Transaction ID:</p>
+            <p class="avatar-wizard-meta">${escapeHtml(uploadedTxId)}</p>
+            <p class="avatar-wizard-error" data-error="true"></p>
+            <div class="avatar-wizard-actions">
+              <button class="ghost-btn" type="button" data-action="copy-id">Скопировать ID</button>
+              <button class="primary-btn" type="button" data-action="set-avatar">Сделать аватаром</button>
+            </div>
+            <button class="secondary-btn" type="button" data-action="close">Закрыть</button>
+          </div>
+        </div>
+      `;
+
+      const errorEl = root.querySelector('[data-error="true"]');
+      root.querySelector('[data-action="copy-id"]')?.addEventListener('click', async () => {
+        try {
+          await navigator.clipboard.writeText(uploadedTxId);
+          setNodeText(errorEl, '');
+        } catch {
+          setNodeText(errorEl, 'Не удалось скопировать Transaction ID.');
+        }
+      });
+      root.querySelector('[data-action="set-avatar"]')?.addEventListener('click', async () => {
+        try {
+          await saveProfileAvatarArweave(cleanLogin, uploadedTxId);
+          if (typeof onAvatarSaved === 'function') await onAvatarSaved();
+          close(true, resolve);
+        } catch {
+          setNodeText(errorEl, 'Не удалось сохранить аватар в профиль.');
+        }
+      });
+      root.querySelector('[data-action="close"]')?.addEventListener('click', () => close(false, resolve));
+    };
+
+    const showStepUpload = async () => {
+      if (closed) return;
+      root.innerHTML = `
+        <div class="modal" data-avatar-wizard-modal="true">
+          <div class="modal-card stack avatar-wizard-card">
+            <h3 class="modal-title">Подготовка загрузки</h3>
+            <p class="meta-muted" data-loading="true">Загружаем Arweave-кошелёк...</p>
+            <p class="avatar-wizard-error" data-error="true"></p>
+            <div class="avatar-wizard-actions">
+              <button class="secondary-btn" type="button" data-action="back">Назад</button>
+            </div>
+          </div>
+        </div>
+      `;
+
+      const loadingEl = root.querySelector('[data-loading="true"]');
+      const errorEl = root.querySelector('[data-error="true"]');
+      root.querySelector('[data-action="back"]')?.addEventListener('click', showStepChoice);
+      try {
+        walletCtx = await getArweaveWalletFromStoredDeviceKey({
+          login: cleanLogin,
+          storagePwd: cleanStoragePwd,
+          onStatus: (message) => {
+            setNodeText(loadingEl, message);
+            if (typeof onStatus === 'function') onStatus(message);
+          },
+        });
+        balanceInfo = await getArweaveBalance({
+          gateway: cleanGateway,
+          address: walletCtx.address,
+        });
+      } catch (error) {
+        setNodeText(errorEl, 'Не удалось получить баланс Arweave.');
+        return;
+      }
+
+      if (BigInt(balanceInfo.winston) <= 0n) {
+        showStepZeroBalance();
+        return;
+      }
+      showStepUploadForm();
+    };
+
+    showStepChoice();
+  });
+}
diff --git a/shine-UI/js/pages/profile-view.js b/shine-UI/js/pages/profile-view.js
index 477cebc..06505b5 100644
--- a/shine-UI/js/pages/profile-view.js
+++ b/shine-UI/js/pages/profile-view.js
@@ -11,6 +11,8 @@ import {
   saveProfileToggle,
 } from '../services/user-profile-params.js';
 import { buildIdentityLines, loadUserProfileCard } from '../services/user-connections.js';
+import { buildArweaveDataUrl } from '../services/arweave-file-service.js';
+import { openAvatarWizard } from '../components/avatar-wizard.js';
 
 export const pageMeta = { id: 'profile-view', title: 'Профиль' };
 
@@ -102,7 +104,13 @@ export function render({ navigate }) {
   topRow.className = 'row';
   topRow.innerHTML = `
     <div class="row" style="gap:12px; align-items:center;">
-      <div class="avatar large">${profile.avatarInitials}</div>
+      <div class="profile-avatar-block">
+        <div class="avatar large profile-avatar" data-profile-avatar="true">
+          <span data-avatar-fallback="true">${profile.avatarInitials}</span>
+          <img src="" alt="Аватар" data-avatar-image="true" hidden />
+        </div>
+        <button class="ghost-btn profile-avatar-change-btn" type="button" data-change-avatar="true">Сменить аватар</button>
+      </div>
       <div class="profile-identity-lines" data-profile-identity="true">
         <div class="profile-identity-line profile-identity-login">${String(login || '').trim() || 'unknown'}</div>
       </div>
@@ -139,11 +147,15 @@ export function render({ navigate }) {
   const officialBtn = badgesRow.querySelector('[data-toggle="official"]');
   const shineBtn = badgesRow.querySelector('[data-toggle="shine"]');
   const addRelativeBtn = relativesCard.querySelector('[data-add-relative="true"]');
+  const changeAvatarBtn = topRow.querySelector('[data-change-avatar="true"]');
 
   let currentFields = [];
   let currentToggles = [];
   let currentGender = PROFILE_GENDER_UNKNOWN;
+  let currentAvatar = { value: '', source: '', txId: '', timeMs: 0 };
   const identityEl = topRow.querySelector('[data-profile-identity="true"]');
+  const avatarImageEl = topRow.querySelector('[data-avatar-image="true"]');
+  const avatarFallbackEl = topRow.querySelector('[data-avatar-fallback="true"]');
 
   function openGenderPickerModal(initialGender) {
     const root = document.getElementById('modal-root');
@@ -207,6 +219,58 @@ export function render({ navigate }) {
     )).join('');
   }
 
+  function buildAvatarFallbackText() {
+    const firstName = String(currentFields.find((field) => field.key === 'first_name')?.value || '').trim();
+    const lastName = String(currentFields.find((field) => field.key === 'last_name')?.value || '').trim();
+    const fromNames = `${firstName.charAt(0)}${lastName.charAt(0)}`.toUpperCase();
+    if (fromNames.trim()) return fromNames;
+
+    const loginFirst = String(login || '').trim().charAt(0).toUpperCase();
+    if (loginFirst) return loginFirst;
+
+    return String(profile.avatarInitials || '??').trim().slice(0, 2).toUpperCase();
+  }
+
+  function showAvatarFallback() {
+    if (avatarImageEl instanceof HTMLImageElement) {
+      avatarImageEl.hidden = true;
+      avatarImageEl.removeAttribute('src');
+    }
+    if (avatarFallbackEl instanceof HTMLElement) {
+      avatarFallbackEl.hidden = false;
+      avatarFallbackEl.textContent = buildAvatarFallbackText();
+    }
+  }
+
+  function updateAvatarUi() {
+    if (!(avatarImageEl instanceof HTMLImageElement)) return;
+    const txId = String(currentAvatar?.txId || '').trim();
+    if (!txId) {
+      showAvatarFallback();
+      return;
+    }
+
+    let avatarUrl = '';
+    try {
+      avatarUrl = buildArweaveDataUrl({
+        gateway: state.entrySettings.arweaveServer,
+        txId,
+      });
+    } catch {
+      showAvatarFallback();
+      return;
+    }
+
+    avatarImageEl.onload = () => {
+      if (avatarFallbackEl instanceof HTMLElement) avatarFallbackEl.hidden = true;
+      avatarImageEl.hidden = false;
+    };
+    avatarImageEl.onerror = () => {
+      showAvatarFallback();
+    };
+    avatarImageEl.src = avatarUrl;
+  }
+
   function updateToggleButton(button, prefix, enabled) {
     button.textContent = `${prefix}: ${toggleText(enabled)}`;
     button.classList.remove('is-no', 'is-yes-official', 'is-yes-shine');
@@ -545,6 +609,7 @@ export function render({ navigate }) {
     officialBtn.disabled = true;
     shineBtn.disabled = true;
     if (addRelativeBtn instanceof HTMLButtonElement) addRelativeBtn.disabled = true;
+    if (changeAvatarBtn instanceof HTMLButtonElement) changeAvatarBtn.disabled = true;
     const genderActionBtn = listWrap.querySelector('[data-edit-gender="true"]');
     if (genderActionBtn instanceof HTMLButtonElement) {
       genderActionBtn.disabled = true;
@@ -555,11 +620,13 @@ export function render({ navigate }) {
       currentFields = snapshot.fields;
       currentToggles = snapshot.toggles;
       currentGender = snapshot.gender || PROFILE_GENDER_UNKNOWN;
+      currentAvatar = snapshot.avatar || { value: '', source: '', txId: '', timeMs: 0 };
 
       syncIdentity();
       renderFields(currentFields);
       updateTogglesUi();
       updateGenderUi();
+      updateAvatarUi();
 
       status.className = 'status-line';
       status.textContent = '';
@@ -572,6 +639,7 @@ export function render({ navigate }) {
       officialBtn.disabled = false;
       shineBtn.disabled = false;
       if (addRelativeBtn instanceof HTMLButtonElement) addRelativeBtn.disabled = false;
+      if (changeAvatarBtn instanceof HTMLButtonElement) changeAvatarBtn.disabled = false;
       const genderActionBtnAfter = listWrap.querySelector('[data-edit-gender="true"]');
       if (genderActionBtnAfter instanceof HTMLButtonElement) {
         genderActionBtnAfter.disabled = false;
@@ -579,6 +647,37 @@ export function render({ navigate }) {
     }
   }
 
+  async function onChangeAvatarClick() {
+    status.className = 'status-line';
+    status.textContent = 'Открываем мастер аватара...';
+
+    try {
+      await openAvatarWizard({
+        login,
+        storagePwd: state.session.storagePwdInMemory,
+        gateway: state.entrySettings.arweaveServer,
+        navigate,
+        onStatus: (message) => {
+          status.className = 'status-line';
+          status.textContent = String(message || '');
+        },
+        onAvatarSaved: async () => {
+          status.className = 'status-line';
+          status.textContent = 'Сохраняем аватар в профиль...';
+          await refreshProfileSnapshot();
+          status.className = 'status-line is-available';
+          status.textContent = 'Аватар обновлён.';
+        },
+      });
+      if (!status.textContent) {
+        status.className = 'status-line';
+      }
+    } catch (error) {
+      status.className = 'status-line is-unavailable';
+      status.textContent = error?.message || 'Не удалось открыть мастер аватара.';
+    }
+  }
+
   async function onToggleClick(toggleKey) {
     const toggle = currentToggles.find((item) => item.key === toggleKey) || { enabled: false };
     const nextEnabled = !toggle.enabled;
@@ -742,10 +841,12 @@ export function render({ navigate }) {
   officialBtn.addEventListener('click', () => onToggleClick('official'));
   shineBtn.addEventListener('click', () => onToggleClick('shine'));
   addRelativeBtn?.addEventListener('click', onAddRelativeClick);
+  changeAvatarBtn?.addEventListener('click', () => { void onChangeAvatarClick(); });
 
   card.append(topRow, badgesRow, status, listWrap, relativesCard);
   screen.append(card);
 
+  showAvatarFallback();
   refreshProfileSnapshot();
 
   return screen;
diff --git a/shine-UI/js/pages/wallet-view.js b/shine-UI/js/pages/wallet-view.js
index a977949..7604624 100644
--- a/shine-UI/js/pages/wallet-view.js
+++ b/shine-UI/js/pages/wallet-view.js
@@ -316,7 +316,18 @@ export function render({ navigate }) {
     `;
     const addressEl = addressCard.querySelector('#wallet-address-value');
 
-    card.append(balanceWrap, addressCard);
+    const helpCard = document.createElement('details');
+    helpCard.className = 'card';
+    helpCard.style.padding = '10px';
+    helpCard.innerHTML = `
+      <summary style="cursor:pointer; font-weight:600;">Как получен этот адрес?</summary>
+      <p class="meta-muted" style="margin-top:8px;">
+        SHiNE берёт ваш локальный device.key и по стандарту SAWD-v1 получает из него нативный Arweave-кошелёк.
+        Приватный ключ не отправляется на сервер. После первого расчёта он хранится только в зашифрованном контейнере этого устройства.
+      </p>
+    `;
+
+    card.append(balanceWrap, addressCard, helpCard);
 
     const actions = document.createElement('div');
     actions.className = 'stack';
@@ -412,7 +423,18 @@ export function render({ navigate }) {
     setStatus('Генерация Arweave-кошелька...');
 
     try {
-      arweaveWalletCtx = await getArweaveWalletFromStoredDeviceKey(sessionArgsOrThrow());
+      arweaveWalletCtx = await getArweaveWalletFromStoredDeviceKey({
+        ...sessionArgsOrThrow(),
+        onStatus: (message) => {
+          const text = String(message || '').trim();
+          if (!text) return;
+          if (text.includes('впервые получаем Arweave-кошелёк')) {
+            setStatus('Сейчас мы впервые получаем Arweave-кошелёк из вашего приватного device key. Это может занять немного времени. После этого кошелёк будет храниться только в зашифрованном контейнере этого устройства.');
+            return;
+          }
+          setStatus(text);
+        },
+      });
       if (modeToken !== activeModeToken) return;
       walletAddress = arweaveWalletCtx.address;
       addressEl.textContent = walletAddress;
diff --git a/shine-UI/js/services/arweave-file-service.js b/shine-UI/js/services/arweave-file-service.js
new file mode 100644
index 0000000..1f9f15a
--- /dev/null
+++ b/shine-UI/js/services/arweave-file-service.js
@@ -0,0 +1,271 @@
+const DEFAULT_ARWEAVE_GATEWAY = 'https://arweave.net';
+const WINSTON_PER_AR = 1_000_000_000_000n;
+const MAX_AVATAR_SOURCE_BYTES = 10 * 1024 * 1024;
+const MAX_AVATAR_SIDE_PX = 768;
+const AVATAR_QUALITY = 0.86;
+const TX_ID_RE = /^[A-Za-z0-9_-]{43}$/;
+
+let arweaveLibPromise = null;
+
+function normalizeGateway(rawGateway) {
+  const raw = String(rawGateway || '').trim();
+  if (!raw) return DEFAULT_ARWEAVE_GATEWAY;
+  let parsed;
+  try {
+    parsed = new URL(raw);
+  } catch {
+    throw new Error('Некорректный Arweave gateway URL');
+  }
+  if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
+    throw new Error('Arweave gateway должен использовать http или https');
+  }
+  const normalized = `${parsed.protocol}//${parsed.host}${parsed.pathname}`.replace(/\/+$/g, '');
+  return normalized || DEFAULT_ARWEAVE_GATEWAY;
+}
+
+function parseGatewayForArweaveInit(gateway) {
+  let parsed;
+  try {
+    parsed = new URL(gateway);
+  } catch {
+    throw new Error('Некорректный Arweave gateway URL');
+  }
+  const protocol = parsed.protocol.replace(':', '');
+  if (protocol !== 'http' && protocol !== 'https') {
+    throw new Error('Arweave gateway должен использовать http или https');
+  }
+  const port = parsed.port
+    ? Number(parsed.port)
+    : (protocol === 'https' ? 443 : 80);
+  return {
+    protocol,
+    host: parsed.hostname,
+    port,
+  };
+}
+
+async function loadArweaveLib() {
+  if (!arweaveLibPromise) {
+    arweaveLibPromise = import('https://esm.sh/arweave@1.15.7?bundle');
+  }
+  return arweaveLibPromise;
+}
+
+function toArFromWinston(winston) {
+  return Number(BigInt(winston)) / Number(WINSTON_PER_AR);
+}
+
+function blobToFile(blob, name, type) {
+  const effectiveType = String(type || blob.type || 'application/octet-stream');
+  if (typeof File === 'function') {
+    return new File([blob], name, { type: effectiveType });
+  }
+  return Object.assign(blob, { name, lastModified: Date.now(), type: effectiveType });
+}
+
+async function createBitmapWithFallback(file) {
+  if (typeof createImageBitmap === 'function') {
+    try {
+      return await createImageBitmap(file);
+    } catch {
+      // continue with <img> fallback
+    }
+  }
+
+  const url = URL.createObjectURL(file);
+  try {
+    const image = await new Promise((resolve, reject) => {
+      const img = new Image();
+      img.onload = () => resolve(img);
+      img.onerror = () => reject(new Error('Не удалось прочитать изображение'));
+      img.src = url;
+    });
+    return image;
+  } finally {
+    URL.revokeObjectURL(url);
+  }
+}
+
+function canvasToBlob(canvas, type, quality) {
+  return new Promise((resolve) => {
+    canvas.toBlob((blob) => resolve(blob), type, quality);
+  });
+}
+
+export function validateArweaveTxId(txId) {
+  const value = String(txId || '').trim();
+  return TX_ID_RE.test(value);
+}
+
+export function buildArweaveAvatarValue(txId) {
+  const cleanTxId = String(txId || '').trim();
+  if (!validateArweaveTxId(cleanTxId)) {
+    throw new Error('Некорректный Transaction ID Arweave');
+  }
+  return `AR:${cleanTxId}`;
+}
+
+export function parseArweaveAvatarValue(value) {
+  const raw = String(value || '').trim();
+  if (!raw.startsWith('AR:')) {
+    return { ok: false, network: '', txId: '' };
+  }
+  const txId = raw.slice(3).trim();
+  if (!validateArweaveTxId(txId)) {
+    return { ok: false, network: '', txId: '' };
+  }
+  return { ok: true, network: 'AR', txId };
+}
+
+export function buildArweaveDataUrl({ gateway, txId }) {
+  const normalizedGateway = normalizeGateway(gateway);
+  const cleanTxId = String(txId || '').trim();
+  if (!validateArweaveTxId(cleanTxId)) {
+    throw new Error('Некорректный Transaction ID Arweave');
+  }
+  return `${normalizedGateway}/${cleanTxId}`;
+}
+
+export async function getArweaveUploadPrice({ gateway, byteLength }) {
+  const normalizedGateway = normalizeGateway(gateway);
+  const bytes = Number(byteLength);
+  if (!Number.isInteger(bytes) || bytes <= 0) {
+    throw new Error('Некорректный размер файла');
+  }
+
+  const response = await fetch(`${normalizedGateway}/price/${bytes}`, { method: 'GET' });
+  const raw = String(await response.text()).trim();
+  if (!response.ok) {
+    throw new Error(`Не удалось получить цену загрузки (${response.status} ${response.statusText})`);
+  }
+  if (!/^\d+$/.test(raw)) {
+    throw new Error('Arweave gateway вернул некорректную цену');
+  }
+
+  return {
+    gateway: normalizedGateway,
+    winston: raw,
+    ar: toArFromWinston(raw),
+  };
+}
+
+export function isSupportedAvatarImageType(type) {
+  const clean = String(type || '').trim().toLowerCase();
+  return clean === 'image/jpeg' || clean === 'image/png' || clean === 'image/webp';
+}
+
+export function validateAvatarSourceFile(file) {
+  if (!(file instanceof File)) {
+    throw new Error('Выберите файл изображения.');
+  }
+  if (!isSupportedAvatarImageType(file.type)) {
+    throw new Error('Поддерживаются только JPEG, PNG или WebP.');
+  }
+  if (Number(file.size || 0) > MAX_AVATAR_SOURCE_BYTES) {
+    throw new Error('Файл слишком большой. Максимум 10 MB.');
+  }
+}
+
+export async function prepareAvatarImageFile(file) {
+  validateAvatarSourceFile(file);
+
+  let bitmap;
+  try {
+    bitmap = await createBitmapWithFallback(file);
+  } catch {
+    throw new Error('Не удалось подготовить изображение.');
+  }
+
+  try {
+    const originalWidth = Number(bitmap.width || 0);
+    const originalHeight = Number(bitmap.height || 0);
+    if (!originalWidth || !originalHeight) {
+      throw new Error('Не удалось подготовить изображение.');
+    }
+
+    const scale = Math.min(1, MAX_AVATAR_SIDE_PX / Math.max(originalWidth, originalHeight));
+    const width = Math.max(1, Math.round(originalWidth * scale));
+    const height = Math.max(1, Math.round(originalHeight * scale));
+
+    const canvas = document.createElement('canvas');
+    canvas.width = width;
+    canvas.height = height;
+    const ctx = canvas.getContext('2d');
+    if (!ctx) {
+      throw new Error('Не удалось подготовить изображение.');
+    }
+    ctx.drawImage(bitmap, 0, 0, width, height);
+
+    let contentType = 'image/webp';
+    let fileName = 'avatar.webp';
+    let blob = await canvasToBlob(canvas, contentType, AVATAR_QUALITY);
+    if (!blob) {
+      contentType = 'image/jpeg';
+      fileName = 'avatar.jpg';
+      blob = await canvasToBlob(canvas, contentType, AVATAR_QUALITY);
+    }
+    if (!blob) {
+      throw new Error('Не удалось подготовить изображение.');
+    }
+
+    const optimizedFile = blobToFile(blob, fileName, contentType);
+    return {
+      file: optimizedFile,
+      originalSizeBytes: Number(file.size || 0),
+      optimizedSizeBytes: Number(optimizedFile.size || 0),
+      originalWidth,
+      originalHeight,
+      width,
+      height,
+      contentType,
+    };
+  } catch (error) {
+    if (error instanceof Error) throw error;
+    throw new Error('Не удалось подготовить изображение.');
+  } finally {
+    if (bitmap && typeof bitmap.close === 'function') {
+      bitmap.close();
+    }
+  }
+}
+
+export async function uploadArweaveFile({ gateway, jwk, file, tags = [] }) {
+  if (!jwk || typeof jwk !== 'object') {
+    throw new Error('Arweave-кошелёк не инициализирован.');
+  }
+  if (!(file instanceof File)) {
+    throw new Error('Выберите файл изображения.');
+  }
+
+  const normalizedGateway = normalizeGateway(gateway);
+  const { host, port, protocol } = parseGatewayForArweaveInit(normalizedGateway);
+  const data = await file.arrayBuffer();
+
+  const moduleRef = await loadArweaveLib();
+  const Arweave = moduleRef?.default || moduleRef;
+  const arweave = Arweave.init({ host, port, protocol });
+
+  const tx = await arweave.createTransaction({ data }, jwk);
+  tx.addTag('Content-Type', String(file.type || 'application/octet-stream'));
+  tx.addTag('App-Name', 'SHiNE');
+  tx.addTag('SHiNE-Type', 'avatar');
+
+  const extraTags = Array.isArray(tags) ? tags : [];
+  extraTags.forEach((item) => {
+    const name = String(item?.name || '').trim();
+    const value = String(item?.value || '').trim();
+    if (!name || !value) return;
+    tx.addTag(name, value);
+  });
+
+  await arweave.transactions.sign(tx, jwk);
+  const postResult = await arweave.transactions.post(tx);
+
+  return {
+    id: tx.id,
+    status: Number(postResult?.status || 0),
+    statusText: String(postResult?.statusText || ''),
+    sizeBytes: Number(file.size || 0),
+    contentType: String(file.type || ''),
+  };
+}
diff --git a/shine-UI/js/services/arweave-wallet-service.js b/shine-UI/js/services/arweave-wallet-service.js
index f6e599f..2ead335 100644
--- a/shine-UI/js/services/arweave-wallet-service.js
+++ b/shine-UI/js/services/arweave-wallet-service.js
@@ -1,4 +1,4 @@
-import { loadEncryptedUserSecrets } from './key-vault.js';
+import { loadEncryptedUserSecrets, updateEncryptedUserSecrets } from './key-vault.js';
 import { extractDeviceKey32FromStoredValue } from './device-key-utils.js';
 import { deriveArweaveWalletFromDeviceKey32 } from './sawd-v1.js';
 
@@ -72,7 +72,37 @@ async function loadArweaveLib() {
   return arweaveLibPromise;
 }
 
-export async function getArweaveWalletFromStoredDeviceKey({ login, storagePwd }) {
+function pickCachedWallet(secrets) {
+  const cached = secrets?.arweaveWallet;
+  if (!cached || typeof cached !== 'object') return null;
+  const derivation = String(cached.derivation || '').trim();
+  const address = String(cached.address || '').trim();
+  const owner = String(cached.owner || '').trim();
+  const jwk = cached.jwk;
+  if (derivation !== 'SAWD-v1' || !address || !owner || !jwk || typeof jwk !== 'object') {
+    return null;
+  }
+  if (!String(jwk.kty || '').trim() || !String(jwk.e || '').trim() || !String(jwk.n || '').trim() || !String(jwk.d || '').trim()) {
+    return null;
+  }
+  return {
+    derivation,
+    address,
+    owner,
+    jwk,
+  };
+}
+
+function safeStatus(onStatus, text) {
+  if (typeof onStatus !== 'function') return;
+  try {
+    onStatus(String(text || ''));
+  } catch {
+    // ignore callback errors
+  }
+}
+
+export async function getArweaveWalletFromStoredDeviceKey({ login, storagePwd, onStatus } = {}) {
   const cleanLogin = String(login || '').trim();
   const cleanPwd = String(storagePwd || '').trim();
   if (!cleanLogin || !cleanPwd) {
@@ -80,6 +110,14 @@ export async function getArweaveWalletFromStoredDeviceKey({ login, storagePwd })
   }
 
   const secrets = await loadEncryptedUserSecrets(cleanLogin, cleanPwd);
+  const cached = pickCachedWallet(secrets);
+  if (cached) {
+    safeStatus(onStatus, 'Arweave-кошелёк загружен.');
+    return cached;
+  }
+
+  safeStatus(onStatus, 'Сейчас мы впервые получаем Arweave-кошелёк из вашего device key. Это может занять немного времени.');
+
   const storedDeviceKey = String(secrets?.deviceKey || '').trim();
   if (!storedDeviceKey) {
     throw new Error('На устройстве не найден device.key (wallet.key)');
@@ -93,11 +131,24 @@ export async function getArweaveWalletFromStoredDeviceKey({ login, storagePwd })
     deviceKey32.fill(0);
   }
 
-  return {
+  const cachedWallet = {
     derivation: wallet.derivation,
     address: wallet.address,
     owner: wallet.owner,
     jwk: wallet.jwk,
+    createdAtMs: Date.now(),
+  };
+
+  await updateEncryptedUserSecrets(cleanLogin, cleanPwd, (nextSecrets) => ({
+    ...nextSecrets,
+    arweaveWallet: cachedWallet,
+  }));
+
+  return {
+    derivation: cachedWallet.derivation,
+    address: cachedWallet.address,
+    owner: cachedWallet.owner,
+    jwk: cachedWallet.jwk,
   };
 }
 
diff --git a/shine-UI/js/services/key-vault.js b/shine-UI/js/services/key-vault.js
index e5243bf..521e3fc 100644
--- a/shine-UI/js/services/key-vault.js
+++ b/shine-UI/js/services/key-vault.js
@@ -65,6 +65,20 @@ export async function loadEncryptedUserSecrets(login, storagePwd) {
   return decryptJsonWithStoragePwd(row.encrypted, storagePwd);
 }
 
+export async function updateEncryptedUserSecrets(login, storagePwd, updater) {
+  if (typeof updater !== 'function') {
+    throw new Error('updateEncryptedUserSecrets: updater должен быть функцией');
+  }
+
+  const current = await loadEncryptedUserSecrets(login, storagePwd);
+  const next = await updater(current);
+  if (!next || typeof next !== 'object') {
+    throw new Error('updateEncryptedUserSecrets: updater должен вернуть объект secrets');
+  }
+  await saveEncryptedUserSecrets(login, storagePwd, next);
+  return next;
+}
+
 export async function saveSessionMaterial(login, material) {
   await put(STORE_SESSIONS, {
     login,
diff --git a/shine-UI/js/services/user-profile-params.js b/shine-UI/js/services/user-profile-params.js
index 228932f..5ee3e7c 100644
--- a/shine-UI/js/services/user-profile-params.js
+++ b/shine-UI/js/services/user-profile-params.js
@@ -1,4 +1,5 @@
 import { authService, state } from '../state.js';
+import { buildArweaveAvatarValue, parseArweaveAvatarValue, validateArweaveTxId } from './arweave-file-service.js';
 
 export const profileFieldDefs = [
   { key: 'first_name', readKeys: ['first_name'], label: 'Имя', placeholder: 'Введите имя' },
@@ -118,12 +119,28 @@ export async function loadProfileSnapshot(login) {
 
   const latestGender = loadLatestByAliasesFromItems(items, ['gender']);
   const gender = normalizeGenderValue(latestGender?.value || PROFILE_GENDER_UNKNOWN);
+  const latestAvatar = loadLatestByAliasesFromItems(items, ['ava']);
+  const parsedAvatar = parseArweaveAvatarValue(latestAvatar?.value || '');
+  const avatar = parsedAvatar.ok
+    ? {
+      value: buildArweaveAvatarValue(parsedAvatar.txId),
+      source: 'arweave',
+      txId: parsedAvatar.txId,
+      timeMs: latestAvatar?.timeMs || 0,
+    }
+    : {
+      value: '',
+      source: '',
+      txId: '',
+      timeMs: latestAvatar?.timeMs || 0,
+    };
 
   return {
     fields,
     toggles,
     gender,
     genderTimeMs: latestGender?.timeMs || 0,
+    avatar,
   };
 }
 
@@ -157,3 +174,11 @@ export async function saveProfileGender(login, gender) {
     storagePwd,
   });
 }
+
+export async function saveProfileAvatarArweave(login, txId) {
+  const cleanTxId = String(txId || '').trim();
+  if (!validateArweaveTxId(cleanTxId)) {
+    throw new Error('Некорректный Transaction ID Arweave');
+  }
+  await saveProfileParamBlock(login, 'ava', buildArweaveAvatarValue(cleanTxId));
+}
diff --git a/shine-UI/styles/components.css b/shine-UI/styles/components.css
index d536b67..f99ab6a 100644
--- a/shine-UI/styles/components.css
+++ b/shine-UI/styles/components.css
@@ -242,6 +242,78 @@
   font-size: 20px;
 }
 
+.profile-avatar-block {
+  display: grid;
+  justify-items: center;
+  gap: 8px;
+}
+
+.profile-avatar {
+  position: relative;
+  overflow: hidden;
+}
+
+.profile-avatar img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  object-position: center;
+  display: block;
+}
+
+.profile-avatar-change-btn {
+  min-height: 34px;
+  padding: 6px 10px;
+}
+
+.avatar-preview-circle {
+  width: 124px;
+  height: 124px;
+  margin: 0 auto;
+  border-radius: 50%;
+  overflow: hidden;
+  border: 1px solid rgba(155, 182, 233, 0.46);
+  background: rgba(13, 26, 50, 0.86);
+  box-shadow: inset 0 0 0 1px rgba(240, 248, 255, 0.1);
+}
+
+.avatar-preview-circle img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  object-position: center;
+  display: block;
+}
+
+.avatar-wizard-preview {
+  width: 140px;
+  height: 140px;
+}
+
+.avatar-wizard-meta {
+  font-size: 13px;
+  line-height: 1.35;
+  color: #d9e7ff;
+  word-break: break-word;
+}
+
+.avatar-wizard-error {
+  min-height: 18px;
+  font-size: 13px;
+  color: #f6a8b3;
+}
+
+.avatar-wizard-actions {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 10px;
+}
+
+.avatar-wizard-choice-grid {
+  display: grid;
+  gap: 10px;
+}
+
 .profile-param-item {
   padding: 10px;
   gap: 6px;