diff --git a/App.tsx b/App.tsx
index b7c1050..ced334c 100644
--- a/App.tsx
+++ b/App.tsx
@@ -10,9 +10,11 @@ import {
   View,
 } from 'react-native'
 import {SafeAreaProvider, SafeAreaView} from 'react-native-safe-area-context'
-import {ImSDK, type ImEventListener, type ImMessage, type MsgType, UpdateSDK, XuqmSDK} from '@xuqm/rn-sdk'
+import {ImSDK, type ImEventListener, type ImMessage, type MsgType, XuqmSDK} from '@xuqm/rn-sdk'
 import {MessageBubble} from './src/components/MessageBubble'
 import {DEMO_CONTENT, MessageComposer} from './src/components/MessageComposer'
+import {GroupChatPanel} from './src/components/GroupChatPanel'
+import {UpdatePanel} from './src/components/UpdatePanel'
 
 const APP_ID = 'ak_demo_chat'
 const MODULE_ID = 'chat-home'
@@ -48,46 +50,39 @@ function App() {
 function DemoConsole() {
   const [currentUser, setCurrentUser] = useState<DemoUser>(DEMO_USERS[0])
   const [connected, setConnected] = useState(false)
-  const [messages, setMessages] = useState<ImMessage[]>([])
+  const [singleMessages, setSingleMessages] = useState<ImMessage[]>([])
+  const [groupMessages, setGroupMessages] = useState<ImMessage[]>([])
   const [sending, setSending] = useState(false)
   const [activityLog, setActivityLog] = useState<string[]>([])
-  const [appUpdateResult, setAppUpdateResult] = useState('点击"检查 App 更新"查看线上版本结果')
-  const [rnUpdateResult, setRnUpdateResult] = useState('点击"检查插件更新"查看热更新结果')
-  const [cachedBundleSummary, setCachedBundleSummary] = useState('暂无本地缓存')
   const activeUserRef = useRef(currentUser)
   const peerUser = DEMO_USERS.find(u => u.id !== currentUser.id) ?? DEMO_USERS[1]
 
   const appendLog = (msg: string) => {
     startTransition(() => {
-      setActivityLog(prev => [`[${new Date().toLocaleTimeString()}] ${msg}`, ...prev].slice(0, 20))
+      setActivityLog(prev =>
+        [`[${new Date().toLocaleTimeString()}] ${msg}`, ...prev].slice(0, 30),
+      )
     })
   }
 
-  const mergeMessage = (message: ImMessage) => {
+  const mergeSingle = (message: ImMessage) => {
     startTransition(() => {
-      setMessages(prev => {
-        const exists = prev.some(item => item.id === message.id)
-        if (exists) return prev.map(item => item.id === message.id ? message : item)
+      setSingleMessages(prev => {
+        const exists = prev.some(m => m.id === message.id)
+        if (exists) return prev.map(m => m.id === message.id ? message : m)
         return [...prev, message].sort((a, b) => a.createdAt.localeCompare(b.createdAt))
       })
     })
   }
 
-  const connectUser = async (user: DemoUser) => {
-    try {
-      ImSDK.disconnect()
-      setConnected(false)
-      setMessages([])
-      await ImSDK.login(user.id, user.nickname)
-      appendLog(`已登录 IM：${user.nickname}`)
-      const history = await ImSDK.fetchHistory(peerUser.id, 0, 50)
-      history.slice().reverse().forEach(item => mergeMessage(item))
-      setConnected(ImSDK.isConnected())
-    } catch (error) {
-      const msg = error instanceof Error ? error.message : 'IM 登录失败'
-      appendLog(`连接失败：${msg}`)
-      Alert.alert('IM 登录失败', msg)
-    }
+  const mergeGroup = (message: ImMessage) => {
+    startTransition(() => {
+      setGroupMessages(prev => {
+        const exists = prev.some(m => m.id === message.id)
+        if (exists) return prev.map(m => m.id === message.id ? message : m)
+        return [...prev, message].sort((a, b) => a.createdAt.localeCompare(b.createdAt))
+      })
+    })
   }
 
   useEffect(() => {
@@ -115,13 +110,14 @@ function DemoConsole() {
         setConnected(false)
         appendLog(`WebSocket 断开：${reason || 'unknown'}`)
       },
-      onMessage(message) {
-        mergeMessage(message)
-        appendLog(`收到消息 [${message.msgType}] from ${message.fromUserId}`)
+      onMessage(msg) {
+        if (msg.chatType === 'SINGLE') mergeSingle(msg)
+        else mergeGroup(msg)
+        appendLog(`收到 [${msg.chatType}/${msg.msgType}] from ${msg.fromUserId}`)
       },
-      onGroupMessage(message) {
-        mergeMessage(message)
-        appendLog(`收到群消息 [${message.msgType}]`)
+      onGroupMessage(msg) {
+        mergeGroup(msg)
+        appendLog(`收到群消息 [${msg.msgType}]`)
       },
       onError(error) {
         appendLog(`IM 错误：${error}`)
@@ -139,14 +135,14 @@ function DemoConsole() {
       try {
         ImSDK.disconnect()
         setConnected(false)
-        setMessages([])
+        setSingleMessages([])
         await ImSDK.login(currentUser.id, currentUser.nickname)
         appendLog(`已登录 IM：${currentUser.nickname}`)
         const history = await ImSDK.fetchHistory(peerUser.id, 0, 50)
-        history.slice().reverse().forEach(item => mergeMessage(item))
+        history.slice().reverse().forEach(m => mergeSingle(m))
         setConnected(ImSDK.isConnected())
-      } catch (error) {
-        const msg = error instanceof Error ? error.message : 'IM 登录失败'
+      } catch (e) {
+        const msg = e instanceof Error ? e.message : 'IM 登录失败'
         appendLog(`连接失败：${msg}`)
         Alert.alert('IM 登录失败', msg)
       }
@@ -154,21 +150,14 @@ function DemoConsole() {
     run()
   }, [currentUser, peerUser.id])
 
-  useEffect(() => {
-    UpdateSDK.getCachedRnBundle(MODULE_ID).then(bundle => {
-      if (!bundle) return
-      setCachedBundleSummary(`已缓存 ${bundle.version}，md5=${bundle.md5}`)
-    })
-  }, [])
-
-  const handleSend = async (msgType: MsgType, content: string) => {
+  const handleSendSingle = async (msgType: MsgType, content: string) => {
     setSending(true)
     try {
       const sent = await ImSDK.sendMessage(peerUser.id, 'SINGLE', msgType, content)
-      mergeMessage(sent)
+      mergeSingle(sent)
       appendLog(`已发送 [${msgType}] 给 ${peerUser.nickname}`)
-    } catch (error) {
-      const msg = error instanceof Error ? error.message : '发送失败'
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '发送失败'
       appendLog(`发送失败 [${msgType}]：${msg}`)
       Alert.alert('发送失败', msg)
     } finally {
@@ -176,96 +165,52 @@ function DemoConsole() {
     }
   }
 
-  const handleSendAllTypes = async () => {
+  const handleSendAllSingle = async () => {
     setSending(true)
-    appendLog(`开始发送全部 ${ALL_DEMO_TYPES.length} 种消息类型…`)
+    appendLog(`开始发送全部 ${ALL_DEMO_TYPES.length} 种消息类型（单聊）…`)
     for (const type of ALL_DEMO_TYPES) {
+      const content = DEMO_CONTENT[type]
+      if (!content) continue
       try {
-        const content = DEMO_CONTENT[type]
-        if (!content) continue
         const sent = await ImSDK.sendMessage(peerUser.id, 'SINGLE', type, content)
-        mergeMessage(sent)
+        mergeSingle(sent)
         appendLog(`✓ [${type}]`)
         await new Promise<void>(resolve => setTimeout(resolve, 300))
-      } catch (error) {
-        const msg = error instanceof Error ? error.message : 'error'
-        appendLog(`✗ [${type}]：${msg}`)
+      } catch (e) {
+        appendLog(`✗ [${type}]：${e instanceof Error ? e.message : 'error'}`)
       }
     }
-    appendLog('全类型演示发送完成')
+    appendLog('单聊全类型演示完成')
     setSending(false)
   }
 
-  const handleRevoke = async (messageId: string) => {
+  const handleRevokeSingle = async (messageId: string) => {
     try {
       const revoked = await ImSDK.revokeMessage(messageId)
-      mergeMessage(revoked)
+      mergeSingle(revoked)
       appendLog(`消息已撤回：${messageId}`)
-    } catch (error) {
-      const msg = error instanceof Error ? error.message : '撤回失败'
-      appendLog(`撤回失败：${msg}`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '撤回失败'
       Alert.alert('撤回失败', msg)
     }
   }
 
-  const handleReloadHistory = async () => {
+  const handleReloadSingle = async () => {
     try {
       const history = await ImSDK.fetchHistory(peerUser.id, 0, 50)
-      setMessages(history.slice().reverse())
+      setSingleMessages(history.slice().reverse())
       appendLog(`历史消息已刷新，共 ${history.length} 条`)
-    } catch (error) {
-      const msg = error instanceof Error ? error.message : '拉取失败'
-      appendLog(`历史拉取失败：${msg}`)
-    }
-  }
-
-  const handleCheckAppUpdate = async () => {
-    try {
-      const result = await UpdateSDK.checkAppUpdate(CURRENT_APP_VERSION_CODE)
-      if (!result.needsUpdate) {
-        setAppUpdateResult('当前已是最新 App 版本')
-        appendLog('App 更新检查：当前最新')
-        return
-      }
-      setAppUpdateResult(
-        `发现版本 ${result.versionName}（code=${result.versionCode}）\nforce=${String(result.forceUpdate)}\n${result.changeLog ?? ''}\n下载：${result.downloadUrl ?? '未提供'}`,
-      )
-      appendLog(`发现 App 新版本：${result.versionName}`)
-    } catch (error) {
-      const msg = error instanceof Error ? error.message : 'App 更新检查失败'
-      setAppUpdateResult(msg)
-      appendLog(`App 更新失败：${msg}`)
-    }
-  }
-
-  const handleCheckRnUpdate = async () => {
-    try {
-      const result = await UpdateSDK.checkRnUpdate(MODULE_ID, CURRENT_RN_VERSION)
-      if (!result.needsUpdate) {
-        setRnUpdateResult('当前已是最新插件版本')
-        appendLog('插件更新检查：当前最新')
-        return
-      }
-      const source = await UpdateSDK.downloadRnBundle(result.downloadUrl)
-      const cached = await UpdateSDK.cacheRnBundle(MODULE_ID, result.latestVersion, result.md5, source)
-      setRnUpdateResult(
-        `发现插件版本 ${result.latestVersion}\nmd5=${result.md5}\n说明：${result.note || '无'}\n已下载源码长度：${source.length}`,
-      )
-      setCachedBundleSummary(`已缓存 ${cached.version}，下载于 ${cached.downloadedAt}`)
-      appendLog(`插件更新已缓存：${cached.version}`)
-    } catch (error) {
-      const msg = error instanceof Error ? error.message : '插件更新检查失败'
-      setRnUpdateResult(msg)
-      appendLog(`插件更新失败：${msg}`)
+    } catch (e) {
+      appendLog(`历史拉取失败：${e instanceof Error ? e.message : 'error'}`)
     }
   }
 
   return (
     <ScrollView style={styles.scroll} contentContainerStyle={styles.content}>
       <Text style={styles.eyebrow}>XuqmGroup RN SDK Demo</Text>
-      <Text style={styles.title}>IM · 全消息类型 · App更新 · 热更新</Text>
+      <Text style={styles.title}>IM · 全消息类型 · 群聊 · App 更新 · 热更新</Text>
       <Text style={styles.subtitle}>
-        连接 {API_BASE_URL}，使用两个演示用户演示全部 IM 消息类型、App 版本检查和插件热更新。
+        连接 {API_BASE_URL}，演示单聊/群聊全消息类型、整包更新和 RN 插件热更新完整流程。
       </Text>
 
       {/* Section 1: 当前会话 */}
@@ -285,72 +230,84 @@ function DemoConsole() {
             )
           })}
         </View>
-        <Text style={styles.metaText}>当前用户：{currentUser.nickname}（{currentUser.id}）</Text>
-        <Text style={styles.metaText}>聊天对象：{peerUser.nickname}（{peerUser.id}）</Text>
+        <Text style={styles.meta}>当前用户：{currentUser.nickname}（{currentUser.id}）</Text>
+        <Text style={styles.meta}>单聊对象：{peerUser.nickname}（{peerUser.id}）</Text>
         <View style={styles.statusRow}>
           <View style={[styles.dot, connected ? styles.dotGreen : styles.dotGray]} />
-          <Text style={styles.metaText}>{connected ? '已连接' : '连接中 / 未连接'}</Text>
+          <Text style={styles.meta}>{connected ? 'IM 已连接' : '连接中 / 未连接'}</Text>
         </View>
         <View style={styles.row}>
-          <PrimaryButton title="刷新历史" onPress={handleReloadHistory} />
-          <GhostButton title="重新登录" onPress={() => connectUser(currentUser)} />
+          <PrimaryBtn title="刷新历史" onPress={handleReloadSingle} />
+          <GhostBtn title="重新登录" onPress={() => {
+            ImSDK.disconnect()
+            setConnected(false)
+            setSingleMessages([])
+            ImSDK.login(currentUser.id, currentUser.nickname)
+              .then(() => ImSDK.fetchHistory(peerUser.id, 0, 50))
+              .then(h => { h.slice().reverse().forEach(m => mergeSingle(m)); setConnected(ImSDK.isConnected()) })
+              .catch(e => appendLog(`重登录失败：${e instanceof Error ? e.message : 'error'}`))
+          }} />
         </View>
       </SectionCard>
 
-      {/* Section 2: 聊天演示 */}
-      <SectionCard title="2. 聊天演示（全消息类型）">
-        <Text style={styles.hint}>
-          长按自己的消息可撤回。点击消息类型选择器切换，"全部类型演示"按钮依次发送所有 12 种类型。
-        </Text>
+      {/* Section 2: 单聊 */}
+      <SectionCard title="2. 单聊演示（全 12 种消息类型）">
+        <Text style={styles.hint}>长按自己的消息可撤回。"全部类型演示"依次发送所有 12 种消息类型。</Text>
         <ScrollView
           style={styles.chatPanel}
           contentContainerStyle={styles.chatContent}
           showsVerticalScrollIndicator={false}>
-          {messages.length === 0 ? (
-            <Text style={styles.emptyText}>还没有消息，发一条试试看。</Text>
+          {singleMessages.length === 0 ? (
+            <Text style={styles.empty}>还没有消息，发一条试试看。</Text>
           ) : (
-            messages.map(message => (
+            singleMessages.map(m => (
               <MessageBubble
-                key={message.id}
-                message={message}
-                isOwn={message.fromUserId === currentUser.id}
+                key={m.id}
+                message={m}
+                isOwn={m.fromUserId === currentUser.id}
                 peerNickname={peerUser.nickname}
-                onRevoke={handleRevoke}
+                onRevoke={handleRevokeSingle}
               />
             ))
           )}
         </ScrollView>
         <MessageComposer
-          onSend={handleSend}
-          onSendAll={handleSendAllTypes}
+          onSend={handleSendSingle}
+          onSendAll={handleSendAllSingle}
           disabled={sending || !connected}
         />
       </SectionCard>
 
-      {/* Section 3: App 更新 */}
-      <SectionCard title="3. App 更新演示">
-        <Text style={styles.paragraph}>
-          本地版本号：{CURRENT_APP_VERSION_CODE}。在服务端发布更高版本后点击检查即可看到结果。
+      {/* Section 3: 群聊 */}
+      <SectionCard title="3. 群聊演示">
+        <Text style={styles.hint}>
+          点击"创建演示群"创建包含 Alice+Bob 的群组，"加载群列表"列出已有群，然后即可发送群消息。
         </Text>
-        <PrimaryButton title="检查 App 更新" onPress={handleCheckAppUpdate} />
-        <Text style={styles.resultText}>{appUpdateResult}</Text>
+        <GroupChatPanel
+          currentUserId={currentUser.id}
+          peerUserId={peerUser.id}
+          peerNickname={peerUser.nickname}
+          appId={APP_ID}
+          onLog={appendLog}
+          groupMessages={groupMessages}
+          onMergeMessage={mergeGroup}
+        />
       </SectionCard>
 
-      {/* Section 4: 插件热更新 */}
-      <SectionCard title="4. 插件热更新演示">
-        <Text style={styles.paragraph}>
-          模块：{MODULE_ID}，本地版本：{CURRENT_RN_VERSION}。
-          热更新流程：检查 → 下载 → 缓存至 AsyncStorage。
-        </Text>
-        <PrimaryButton title="检查插件更新并缓存" onPress={handleCheckRnUpdate} />
-        <Text style={styles.resultText}>{rnUpdateResult}</Text>
-        <Text style={styles.cacheText}>本地缓存：{cachedBundleSummary}</Text>
+      {/* Section 4: 更新演示 */}
+      <SectionCard title="4. 更新演示">
+        <UpdatePanel
+          appVersionCode={CURRENT_APP_VERSION_CODE}
+          rnModuleId={MODULE_ID}
+          rnCurrentVersion={CURRENT_RN_VERSION}
+          onLog={appendLog}
+        />
       </SectionCard>
 
       {/* Section 5: 活动日志 */}
       <SectionCard title="5. 活动日志">
         {activityLog.length === 0 ? (
-          <Text style={styles.emptyText}>暂无日志</Text>
+          <Text style={styles.empty}>暂无日志</Text>
         ) : (
           activityLog.map((item, i) => (
             <Text key={i} style={styles.logLine}>{item}</Text>
@@ -370,7 +327,7 @@ function SectionCard({title, children}: {title: string; children: React.ReactNod
   )
 }
 
-function PrimaryButton({title, onPress, disabled}: {title: string; onPress: () => void; disabled?: boolean}) {
+function PrimaryBtn({title, onPress, disabled}: {title: string; onPress: () => void; disabled?: boolean}) {
   return (
     <Pressable onPress={onPress} disabled={disabled} style={[styles.primaryBtn, disabled && styles.btnDisabled]}>
       <Text style={styles.primaryBtnText}>{title}</Text>
@@ -378,7 +335,7 @@ function PrimaryButton({title, onPress, disabled}: {title: string; onPress: () =
   )
 }
 
-function GhostButton({title, onPress}: {title: string; onPress: () => void}) {
+function GhostBtn({title, onPress}: {title: string; onPress: () => void}) {
   return (
     <Pressable onPress={onPress} style={styles.ghostBtn}>
       <Text style={styles.ghostBtnText}>{title}</Text>
@@ -389,12 +346,12 @@ function GhostButton({title, onPress}: {title: string; onPress: () => void}) {
 const styles = StyleSheet.create({
   safeArea: {flex: 1, backgroundColor: '#f5efe3'},
   scroll: {flex: 1, backgroundColor: '#f5efe3'},
-  content: {padding: 18, gap: 14, paddingBottom: 32},
+  content: {padding: 18, gap: 14, paddingBottom: 40},
   eyebrow: {fontSize: 13, fontWeight: '700', color: '#915f34', textTransform: 'uppercase', letterSpacing: 1.1},
-  title: {fontSize: 28, lineHeight: 34, fontWeight: '800', color: '#1f2933'},
-  subtitle: {fontSize: 14, lineHeight: 21, color: '#4b5563'},
+  title: {fontSize: 26, lineHeight: 32, fontWeight: '800', color: '#1f2933'},
+  subtitle: {fontSize: 13, lineHeight: 20, color: '#4b5563'},
   card: {borderRadius: 24, padding: 16, backgroundColor: '#fffaf2', borderWidth: 1, borderColor: '#ead7b7', gap: 12},
-  cardTitle: {fontSize: 18, fontWeight: '800', color: '#1f2933'},
+  cardTitle: {fontSize: 17, fontWeight: '800', color: '#1f2933'},
   hint: {fontSize: 13, lineHeight: 19, color: '#6b7280'},
   userRow: {flexDirection: 'row', gap: 10},
   userChip: {paddingHorizontal: 16, paddingVertical: 10, borderRadius: 999, backgroundColor: '#efe2c5'},
@@ -405,20 +362,17 @@ const styles = StyleSheet.create({
   dot: {width: 8, height: 8, borderRadius: 4},
   dotGreen: {backgroundColor: '#22c55e'},
   dotGray: {backgroundColor: '#9ca3af'},
-  metaText: {fontSize: 14, color: '#4b5563'},
+  meta: {fontSize: 13, color: '#4b5563'},
   row: {flexDirection: 'row', gap: 10},
-  chatPanel: {maxHeight: 360, borderRadius: 18, backgroundColor: '#f4ecdf'},
+  chatPanel: {maxHeight: 340, borderRadius: 18, backgroundColor: '#f4ecdf'},
   chatContent: {padding: 12, gap: 6},
-  emptyText: {fontSize: 14, color: '#7c7f85', textAlign: 'center', paddingVertical: 20},
-  paragraph: {fontSize: 14, lineHeight: 21, color: '#4b5563'},
-  primaryBtn: {minHeight: 46, borderRadius: 16, alignItems: 'center', justifyContent: 'center', backgroundColor: '#1f2933', paddingHorizontal: 16},
-  primaryBtnText: {color: '#fffdf8', fontSize: 15, fontWeight: '800'},
-  ghostBtn: {minHeight: 46, borderRadius: 16, alignItems: 'center', justifyContent: 'center', backgroundColor: '#efe2c5', paddingHorizontal: 16},
-  ghostBtnText: {color: '#4b5563', fontSize: 15, fontWeight: '700'},
+  empty: {fontSize: 14, color: '#7c7f85', textAlign: 'center', paddingVertical: 20},
+  primaryBtn: {minHeight: 44, borderRadius: 14, alignItems: 'center', justifyContent: 'center', backgroundColor: '#1f2933', paddingHorizontal: 16},
+  primaryBtnText: {color: '#fffdf8', fontSize: 14, fontWeight: '800'},
+  ghostBtn: {minHeight: 44, borderRadius: 14, alignItems: 'center', justifyContent: 'center', backgroundColor: '#efe2c5', paddingHorizontal: 16},
+  ghostBtnText: {color: '#4b5563', fontSize: 14, fontWeight: '700'},
   btnDisabled: {opacity: 0.45},
-  resultText: {fontSize: 14, lineHeight: 21, color: '#1f2933'},
-  cacheText: {fontSize: 13, color: '#6b7280'},
-  logLine: {fontSize: 12, lineHeight: 18, color: '#374151', fontFamily: 'monospace'},
+  logLine: {fontSize: 11, lineHeight: 17, color: '#374151', fontFamily: 'monospace'},
 })
 
 export default App
diff --git a/src/components/GroupChatPanel.tsx b/src/components/GroupChatPanel.tsx
new file mode 100644
index 0000000..07a35c1
--- /dev/null
+++ b/src/components/GroupChatPanel.tsx
@@ -0,0 +1,269 @@
+import React, {useState} from 'react'
+import {Alert, Pressable, ScrollView, StyleSheet, Text, View} from 'react-native'
+import {ImSDK, type ImGroup, type ImMessage, type MsgType} from '@xuqm/rn-sdk'
+import {MessageBubble} from './MessageBubble'
+import {DEMO_CONTENT, MessageComposer} from './MessageComposer'
+
+const ALL_DEMO_TYPES: MsgType[] = [
+  'TEXT', 'IMAGE', 'VIDEO', 'AUDIO', 'FILE', 'CUSTOM',
+  'LOCATION', 'NOTIFY', 'RICH_TEXT', 'CALL_AUDIO', 'CALL_VIDEO', 'FORWARD',
+]
+
+interface Props {
+  currentUserId: string
+  peerUserId: string
+  peerNickname: string
+  appId: string
+  onLog: (msg: string) => void
+  groupMessages: ImMessage[]
+  onMergeMessage: (msg: ImMessage) => void
+}
+
+export function GroupChatPanel({
+  currentUserId,
+  peerUserId,
+  peerNickname,
+  onLog,
+  groupMessages,
+  onMergeMessage,
+}: Props) {
+  const [activeGroup, setActiveGroup] = useState<ImGroup | null>(null)
+  const [groups, setGroups] = useState<ImGroup[]>([])
+  const [sending, setSending] = useState(false)
+  const [loadingGroups, setLoadingGroups] = useState(false)
+
+  const handleCreateGroup = async () => {
+    try {
+      const group = await ImSDK.createGroup('RN Demo 演示群', [currentUserId, peerUserId])
+      onLog(`创建群组：${group.name}（id=${group.id}）`)
+      setActiveGroup(group)
+      setGroups(prev => [group, ...prev.filter(g => g.id !== group.id)])
+      ImSDK.subscribeGroup(group.id)
+      const history = await ImSDK.fetchGroupHistory(group.id, 0, 50)
+      history.slice().reverse().forEach(m => onMergeMessage(m))
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '创建群组失败'
+      onLog(`群组创建失败：${msg}`)
+      Alert.alert('创建群组失败', msg)
+    }
+  }
+
+  const handleLoadGroups = async () => {
+    setLoadingGroups(true)
+    try {
+      const list = await ImSDK.listGroups()
+      setGroups(list)
+      onLog(`已加载 ${list.length} 个群组`)
+      if (list.length > 0 && !activeGroup) {
+        const first = list[0]
+        setActiveGroup(first)
+        ImSDK.subscribeGroup(first.id)
+        const history = await ImSDK.fetchGroupHistory(first.id, 0, 50)
+        history.slice().reverse().forEach(m => onMergeMessage(m))
+        onLog(`加入群组：${first.name}`)
+      }
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '加载群组失败'
+      onLog(`加载群组失败：${msg}`)
+    } finally {
+      setLoadingGroups(false)
+    }
+  }
+
+  const handleSwitchGroup = async (group: ImGroup) => {
+    setActiveGroup(group)
+    ImSDK.subscribeGroup(group.id)
+    try {
+      const history = await ImSDK.fetchGroupHistory(group.id, 0, 50)
+      history.slice().reverse().forEach(m => onMergeMessage(m))
+      onLog(`切换群组：${group.name}`)
+    } catch (e) {
+      onLog(`历史拉取失败：${e instanceof Error ? e.message : 'error'}`)
+    }
+  }
+
+  const handleSend = async (msgType: MsgType, content: string) => {
+    if (!activeGroup) {
+      Alert.alert('提示', '请先创建或选择一个群组')
+      return
+    }
+    setSending(true)
+    try {
+      const sent = await ImSDK.sendMessage(activeGroup.id, 'GROUP', msgType, content)
+      onMergeMessage(sent)
+      onLog(`群发 [${msgType}] → ${activeGroup.name}`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '发送失败'
+      onLog(`群发失败 [${msgType}]：${msg}`)
+      Alert.alert('发送失败', msg)
+    } finally {
+      setSending(false)
+    }
+  }
+
+  const handleSendAllTypes = async () => {
+    if (!activeGroup) {
+      Alert.alert('提示', '请先创建或选择一个群组')
+      return
+    }
+    setSending(true)
+    onLog(`开始群发全部 ${ALL_DEMO_TYPES.length} 种消息类型…`)
+    for (const type of ALL_DEMO_TYPES) {
+      const content = DEMO_CONTENT[type]
+      if (!content) continue
+      try {
+        const sent = await ImSDK.sendMessage(activeGroup.id, 'GROUP', type, content)
+        onMergeMessage(sent)
+        onLog(`✓ 群发 [${type}]`)
+        await new Promise<void>(resolve => setTimeout(resolve, 300))
+      } catch (e) {
+        onLog(`✗ 群发 [${type}]：${e instanceof Error ? e.message : 'error'}`)
+      }
+    }
+    onLog('群发全类型演示完成')
+    setSending(false)
+  }
+
+  const handleRevoke = async (messageId: string) => {
+    try {
+      const revoked = await ImSDK.revokeMessage(messageId)
+      onMergeMessage(revoked)
+      onLog(`群消息已撤回：${messageId}`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '撤回失败'
+      Alert.alert('撤回失败', msg)
+    }
+  }
+
+  const groupMessages_ = activeGroup
+    ? groupMessages.filter(m => m.toId === activeGroup.id)
+    : []
+
+  const parsedMembers = activeGroup ? (() => {
+    try { return JSON.parse(activeGroup.memberIds) as string[] } catch { return [] }
+  })() : []
+
+  return (
+    <View style={styles.container}>
+      {/* 群组管理 */}
+      <View style={styles.groupBar}>
+        <Pressable onPress={handleCreateGroup} style={styles.btnCreate}>
+          <Text style={styles.btnCreateText}>+ 创建演示群</Text>
+        </Pressable>
+        <Pressable
+          onPress={handleLoadGroups}
+          disabled={loadingGroups}
+          style={[styles.btnLoad, loadingGroups && styles.btnDisabled]}>
+          <Text style={styles.btnLoadText}>{loadingGroups ? '加载中…' : '加载群列表'}</Text>
+        </Pressable>
+      </View>
+
+      {/* 群列表 */}
+      {groups.length > 0 && (
+        <ScrollView
+          horizontal
+          showsHorizontalScrollIndicator={false}
+          contentContainerStyle={styles.groupList}>
+          {groups.map(g => (
+            <Pressable
+              key={g.id}
+              onPress={() => handleSwitchGroup(g)}
+              style={[styles.groupChip, activeGroup?.id === g.id && styles.groupChipActive]}>
+              <Text style={[styles.groupChipText, activeGroup?.id === g.id && styles.groupChipTextActive]}>
+                {g.name}
+              </Text>
+            </Pressable>
+          ))}
+        </ScrollView>
+      )}
+
+      {/* 当前群信息 */}
+      {activeGroup ? (
+        <View style={styles.groupInfo}>
+          <Text style={styles.groupInfoName}>📋 {activeGroup.name}</Text>
+          <Text style={styles.groupInfoMeta}>
+            群 ID：{activeGroup.id.slice(0, 8)}…
+            {' · '}成员 {parsedMembers.length} 人
+          </Text>
+        </View>
+      ) : (
+        <Text style={styles.noGroupHint}>创建或加载群组后，即可在此发送群消息。</Text>
+      )}
+
+      {/* 群消息列表 */}
+      <ScrollView
+        style={styles.chatPanel}
+        contentContainerStyle={styles.chatContent}
+        showsVerticalScrollIndicator={false}>
+        {groupMessages_.length === 0 ? (
+          <Text style={styles.emptyText}>
+            {activeGroup ? '还没有群消息，发一条试试看。' : '暂无群组'}
+          </Text>
+        ) : (
+          groupMessages_.map(m => (
+            <MessageBubble
+              key={m.id}
+              message={m}
+              isOwn={m.fromUserId === currentUserId}
+              peerNickname={peerNickname}
+              onRevoke={handleRevoke}
+            />
+          ))
+        )}
+      </ScrollView>
+
+      {/* 发送区 */}
+      <MessageComposer
+        onSend={handleSend}
+        onSendAll={handleSendAllTypes}
+        disabled={sending || !activeGroup}
+      />
+    </View>
+  )
+}
+
+const styles = StyleSheet.create({
+  container: {gap: 10},
+  groupBar: {flexDirection: 'row', gap: 10},
+  btnCreate: {
+    flex: 1,
+    minHeight: 42,
+    borderRadius: 14,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: '#1f2933',
+  },
+  btnCreateText: {color: '#fffdf8', fontSize: 14, fontWeight: '700'},
+  btnLoad: {
+    flex: 1,
+    minHeight: 42,
+    borderRadius: 14,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: '#efe2c5',
+  },
+  btnLoadText: {color: '#4b5563', fontSize: 14, fontWeight: '700'},
+  btnDisabled: {opacity: 0.5},
+  groupList: {gap: 8, paddingVertical: 2},
+  groupChip: {
+    paddingHorizontal: 14,
+    paddingVertical: 8,
+    borderRadius: 999,
+    backgroundColor: '#efe2c5',
+  },
+  groupChipActive: {backgroundColor: '#915f34'},
+  groupChipText: {fontSize: 13, fontWeight: '700', color: '#4b5563'},
+  groupChipTextActive: {color: '#fff'},
+  groupInfo: {
+    backgroundColor: '#f0e8d8',
+    borderRadius: 14,
+    padding: 10,
+    gap: 3,
+  },
+  groupInfoName: {fontSize: 14, fontWeight: '700', color: '#1f2933'},
+  groupInfoMeta: {fontSize: 12, color: '#6b7280'},
+  noGroupHint: {fontSize: 13, color: '#9ca3af', textAlign: 'center', paddingVertical: 8},
+  chatPanel: {maxHeight: 320, borderRadius: 18, backgroundColor: '#f4ecdf'},
+  chatContent: {padding: 12, gap: 6},
+  emptyText: {fontSize: 14, color: '#7c7f85', textAlign: 'center', paddingVertical: 20},
+})
diff --git a/src/components/UpdatePanel.tsx b/src/components/UpdatePanel.tsx
new file mode 100644
index 0000000..0b13df6
--- /dev/null
+++ b/src/components/UpdatePanel.tsx
@@ -0,0 +1,320 @@
+import React, {useState} from 'react'
+import {Linking, Platform, Pressable, StyleSheet, Text, View} from 'react-native'
+import {UpdateSDK} from '@xuqm/rn-sdk'
+
+interface Props {
+  appVersionCode: number
+  rnModuleId: string
+  rnCurrentVersion: string
+  onLog: (msg: string) => void
+}
+
+type StepStatus = 'idle' | 'loading' | 'ok' | 'error'
+
+interface CheckResult {
+  needsUpdate: boolean
+  label: string
+  detail: string
+}
+
+export function UpdatePanel({appVersionCode, rnModuleId, rnCurrentVersion, onLog}: Props) {
+  const [appStep, setAppStep] = useState<StepStatus>('idle')
+  const [rnCheckStep, setRnCheckStep] = useState<StepStatus>('idle')
+  const [rnDownloadStep, setRnDownloadStep] = useState<StepStatus>('idle')
+  const [rnCacheStep, setRnCacheStep] = useState<StepStatus>('idle')
+
+  const [appResult, setAppResult] = useState<CheckResult | null>(null)
+  const [rnResult, setRnResult] = useState<CheckResult | null>(null)
+  const [rnDownloadInfo, setRnDownloadInfo] = useState('')
+  const [rnCacheInfo, setRnCacheInfo] = useState('')
+
+  const reset = () => {
+    setAppStep('idle')
+    setRnCheckStep('idle')
+    setRnDownloadStep('idle')
+    setRnCacheStep('idle')
+    setAppResult(null)
+    setRnResult(null)
+    setRnDownloadInfo('')
+    setRnCacheInfo('')
+  }
+
+  const runAppUpdate = async () => {
+    reset()
+    setAppStep('loading')
+    try {
+      const res = await UpdateSDK.checkAppUpdate(appVersionCode)
+      if (!res.needsUpdate) {
+        setAppResult({
+          needsUpdate: false,
+          label: '✓ App 已是最新版本',
+          detail: `当前版本码：${appVersionCode}，服务端无更高版本`,
+        })
+        setAppStep('ok')
+        onLog('App 更新检查：当前最新')
+        return
+      }
+      setAppResult({
+        needsUpdate: true,
+        label: `↑ 发现新版本 ${res.versionName ?? ''}（code=${res.versionCode ?? ''}）`,
+        detail: [
+          res.changeLog ? `更新说明：${res.changeLog}` : '',
+          `强制更新：${res.forceUpdate ? '是' : '否'}`,
+          res.downloadUrl ? `下载：${res.downloadUrl}` : '',
+          res.appStoreUrl ? `App Store：${res.appStoreUrl}` : '',
+        ].filter(Boolean).join('\n'),
+      })
+      setAppStep('ok')
+      onLog(`发现 App 新版本：${res.versionName}`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : 'App 更新检查失败'
+      setAppResult({needsUpdate: false, label: '✗ 检查失败', detail: msg})
+      setAppStep('error')
+      onLog(`App 更新失败：${msg}`)
+    }
+  }
+
+  const runRnUpdate = async () => {
+    setRnCheckStep('loading')
+    setRnDownloadStep('idle')
+    setRnCacheStep('idle')
+    setRnResult(null)
+    setRnDownloadInfo('')
+    setRnCacheInfo('')
+
+    let checkInfo: Awaited<ReturnType<typeof UpdateSDK.checkRnUpdate>>
+    try {
+      checkInfo = await UpdateSDK.checkRnUpdate(rnModuleId, rnCurrentVersion)
+      if (!checkInfo.needsUpdate) {
+        setRnResult({
+          needsUpdate: false,
+          label: '✓ 插件已是最新版本',
+          detail: `当前版本：${rnCurrentVersion}，服务端无更高版本`,
+        })
+        setRnCheckStep('ok')
+        onLog('插件更新检查：当前最新')
+        return
+      }
+      setRnResult({
+        needsUpdate: true,
+        label: `↑ 发现插件版本 ${checkInfo.latestVersion}（当前 ${rnCurrentVersion}）`,
+        detail: [
+          `模块：${rnModuleId}`,
+          `平台：${Platform.OS}`,
+          `md5：${checkInfo.md5}`,
+          checkInfo.note ? `说明：${checkInfo.note}` : '',
+          `minCommonVersion：${checkInfo.minCommonVersion}`,
+        ].filter(Boolean).join('\n'),
+      })
+      setRnCheckStep('ok')
+      onLog(`发现插件新版本：${checkInfo.latestVersion}`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '检查失败'
+      setRnResult({needsUpdate: false, label: '✗ 检查失败', detail: msg})
+      setRnCheckStep('error')
+      onLog(`插件更新检查失败：${msg}`)
+      return
+    }
+
+    // Step 2: Download
+    setRnDownloadStep('loading')
+    let source: string
+    try {
+      source = await UpdateSDK.downloadRnBundle(checkInfo.downloadUrl)
+      setRnDownloadInfo(`下载完成，源码长度：${source.length} 字符`)
+      setRnDownloadStep('ok')
+      onLog(`插件 bundle 下载完成：${source.length} chars`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '下载失败'
+      setRnDownloadInfo(`✗ 下载失败：${msg}`)
+      setRnDownloadStep('error')
+      onLog(`插件下载失败：${msg}`)
+      return
+    }
+
+    // Step 3: Cache
+    setRnCacheStep('loading')
+    try {
+      const cached = await UpdateSDK.cacheRnBundle(
+        rnModuleId,
+        checkInfo.latestVersion,
+        checkInfo.md5,
+        source,
+      )
+      setRnCacheInfo(
+        `已写入 AsyncStorage\n版本：${cached.version}\nmd5：${cached.md5}\n时间：${cached.downloadedAt}`,
+      )
+      setRnCacheStep('ok')
+      onLog(`插件 bundle 已缓存：${cached.version}`)
+    } catch (e) {
+      const msg = e instanceof Error ? e.message : '缓存失败'
+      setRnCacheInfo(`✗ 缓存失败：${msg}`)
+      setRnCacheStep('error')
+      onLog(`插件缓存失败：${msg}`)
+    }
+  }
+
+  const handleOpenDownload = () => {
+    if (appResult?.detail) {
+      const match = appResult.detail.match(/下载：(.+)/)
+      const url = match?.[1]?.trim()
+      if (url) Linking.openURL(url)
+    }
+  }
+
+  return (
+    <View style={styles.container}>
+      {/* App 整包更新 */}
+      <View style={styles.block}>
+        <Text style={styles.blockTitle}>App 整包更新（APK / IPA）</Text>
+        <Text style={styles.blockHint}>
+          Android 返回 APK 下载链接，iOS 返回 App Store 跳转。
+          本地版本码写死为 {appVersionCode}。
+        </Text>
+        <StepRow
+          step={1}
+          label="向服务端查询最新版本号"
+          status={appStep}
+          onPress={runAppUpdate}
+          buttonText="检查 App 更新"
+        />
+        {appResult && (
+          <ResultBox label={appResult.label} detail={appResult.detail} ok={appStep === 'ok' && !appResult.needsUpdate} />
+        )}
+        {appResult?.needsUpdate && appStep === 'ok' && (
+          <Pressable onPress={handleOpenDownload} style={styles.openBtn}>
+            <Text style={styles.openBtnText}>打开下载链接 ↗</Text>
+          </Pressable>
+        )}
+      </View>
+
+      {/* RN 插件热更新 */}
+      <View style={styles.block}>
+        <Text style={styles.blockTitle}>RN 插件热更新（JS Bundle）</Text>
+        <Text style={styles.blockHint}>
+          模块 <Text style={styles.mono}>{rnModuleId}</Text>，本地版本 <Text style={styles.mono}>{rnCurrentVersion}</Text>。
+          热更新全流程：检查 → 下载 → 缓存至 AsyncStorage。
+        </Text>
+
+        <StepRow
+          step={1}
+          label="检查服务端是否有更高版本"
+          status={rnCheckStep}
+          onPress={runRnUpdate}
+          buttonText="开始热更新流程"
+        />
+        {rnResult && (
+          <ResultBox label={rnResult.label} detail={rnResult.detail} ok={rnCheckStep === 'ok' && !rnResult.needsUpdate} />
+        )}
+
+        {rnCheckStep === 'ok' && rnResult?.needsUpdate && (
+          <>
+            <StepRow
+              step={2}
+              label="下载 bundle 文件"
+              status={rnDownloadStep}
+            />
+            {rnDownloadInfo ? (
+              <ResultBox label={rnDownloadInfo} detail="" ok={rnDownloadStep === 'ok'} />
+            ) : null}
+
+            <StepRow
+              step={3}
+              label="写入本地缓存（AsyncStorage）"
+              status={rnCacheStep}
+            />
+            {rnCacheInfo ? (
+              <ResultBox label={rnCacheInfo} detail="" ok={rnCacheStep === 'ok'} />
+            ) : null}
+          </>
+        )}
+      </View>
+    </View>
+  )
+}
+
+function StepRow({
+  step,
+  label,
+  status,
+  onPress,
+  buttonText,
+}: {
+  step: number
+  label: string
+  status: StepStatus
+  onPress?: () => void
+  buttonText?: string
+}) {
+  const icon = status === 'idle' ? '○' : status === 'loading' ? '⟳' : status === 'ok' ? '✓' : '✗'
+  const iconColor = status === 'ok' ? '#22c55e' : status === 'error' ? '#ef4444' : status === 'loading' ? '#f59e0b' : '#9ca3af'
+
+  return (
+    <View style={styles.stepRow}>
+      <Text style={[styles.stepIcon, {color: iconColor}]}>{icon}</Text>
+      <View style={styles.stepBody}>
+        <Text style={styles.stepLabel}>
+          <Text style={styles.stepNum}>步骤 {step}：</Text>
+          {label}
+        </Text>
+      </View>
+      {onPress && buttonText && (
+        <Pressable
+          onPress={onPress}
+          disabled={status === 'loading'}
+          style={[styles.stepBtn, status === 'loading' && styles.btnDisabled]}>
+          <Text style={styles.stepBtnText}>
+            {status === 'loading' ? '检查中…' : buttonText}
+          </Text>
+        </Pressable>
+      )}
+    </View>
+  )
+}
+
+function ResultBox({label, detail, ok}: {label: string; detail: string; ok: boolean}) {
+  return (
+    <View style={[styles.resultBox, ok ? styles.resultBoxOk : styles.resultBoxInfo]}>
+      <Text style={styles.resultLabel}>{label}</Text>
+      {detail ? <Text style={styles.resultDetail}>{detail}</Text> : null}
+    </View>
+  )
+}
+
+const styles = StyleSheet.create({
+  container: {gap: 16},
+  block: {gap: 10},
+  blockTitle: {fontSize: 15, fontWeight: '800', color: '#1f2933'},
+  blockHint: {fontSize: 13, lineHeight: 19, color: '#6b7280'},
+  mono: {fontFamily: 'monospace', fontSize: 12},
+  stepRow: {flexDirection: 'row', alignItems: 'center', gap: 8},
+  stepIcon: {fontSize: 18, width: 24, textAlign: 'center'},
+  stepBody: {flex: 1},
+  stepLabel: {fontSize: 13, color: '#374151'},
+  stepNum: {fontWeight: '700', color: '#1f2933'},
+  stepBtn: {
+    paddingHorizontal: 12,
+    paddingVertical: 8,
+    borderRadius: 12,
+    backgroundColor: '#1f2933',
+  },
+  stepBtnText: {color: '#fff', fontSize: 12, fontWeight: '700'},
+  btnDisabled: {opacity: 0.5},
+  resultBox: {
+    borderRadius: 12,
+    padding: 10,
+    gap: 4,
+  },
+  resultBoxOk: {backgroundColor: '#f0fdf4', borderWidth: 1, borderColor: '#86efac'},
+  resultBoxInfo: {backgroundColor: '#fff7ed', borderWidth: 1, borderColor: '#fdba74'},
+  resultLabel: {fontSize: 13, fontWeight: '600', color: '#1f2933'},
+  resultDetail: {fontSize: 12, color: '#4b5563', lineHeight: 18, fontFamily: 'monospace'},
+  openBtn: {
+    minHeight: 40,
+    borderRadius: 12,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: '#2563eb',
+  },
+  openBtnText: {color: '#fff', fontSize: 13, fontWeight: '700'},
+})