diff --git a/src/client.ts b/src/client.ts
index cd8bc9a..f8ea4c2 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -91,7 +91,8 @@ export class Pushy {
   options = defaultClientOptions;
   clientType: 'Pushy' | 'Cresc' = 'Pushy';
   lastChecking?: number;
-  lastRespJson?: Promise<any>;
+  lastRespJson?: Promise<CheckResult>;
+  lastRespText?: Promise<string>;
 
   version = cInfo.rnu;
   loggerPromise = (() => {
@@ -294,20 +295,23 @@ export class Pushy {
       this.throwIfEnabled(new Error('errorChecking'));
       return this.lastRespJson ? await this.lastRespJson : emptyObj;
     }
+
+    if (resp.status !== 200) {
+      const errorMessage = `${resp.status}: ${resp.statusText}`;
+      this.report({
+        type: 'errorChecking',
+        message: errorMessage,
+      });
+      this.throwIfEnabled(new Error(errorMessage));
+      log('error checking response:', resp.status, await resp.text());
+      return this.lastRespJson ? await this.lastRespJson : emptyObj;
+    }
     this.lastRespJson = resp.json();
 
     const result: CheckResult = await this.lastRespJson;
 
     log('checking result:', result);
 
-    if (resp.status !== 200) {
-      this.report({
-        type: 'errorChecking',
-        message: result.message,
-      });
-      this.throwIfEnabled(new Error(result.message));
-    }
-
     return result;
   };
   getBackupEndpoints = async () => {
diff --git a/src/provider.tsx b/src/provider.tsx
index 2dc1fa1..6b1e28c 100644
--- a/src/provider.tsx
+++ b/src/provider.tsx
@@ -14,7 +14,12 @@ import {
 } from 'react-native';
 import { Pushy, Cresc, sharedState } from './client';
 import { currentVersion, packageVersion, getCurrentVersionInfo } from './core';
-import { CheckResult, ProgressData, UpdateTestPayload } from './type';
+import {
+  CheckResult,
+  MixedCheckResult,
+  ProgressData,
+  UpdateTestPayload,
+} from './type';
 import { UpdateContext } from './context';
 import { URL } from 'react-native-url-polyfill';
 import { isInRollout } from './isInRollout';
@@ -158,84 +163,95 @@ export const UpdateProvider = ({
         return;
       }
       lastChecking.current = now;
-      let info: CheckResult;
+      let rootInfo: MixedCheckResult | undefined;
       try {
-        info = await client.checkUpdate(extra);
+        rootInfo = await client.checkUpdate(extra);
       } catch (e: any) {
         setLastError(e);
         alertError('更新检查失败', e.message);
         throwErrorIfEnabled(e);
         return;
       }
-      if (!info) {
+      if (!rootInfo) {
         return;
       }
-      const rollout = info.config?.rollout?.[packageVersion];
-      if (info.update && rollout) {
-        if (!isInRollout(rollout)) {
-          log(`not in ${rollout}% rollout, ignored`);
-          return;
+      const versions = rootInfo.versions || [rootInfo as CheckResult];
+      delete rootInfo.versions;
+      for (const versionInfo of versions) {
+        const info: CheckResult = {
+          ...versionInfo,
+          ...rootInfo,
+        };
+        const rollout = info.config?.rollout?.[packageVersion];
+        if (info.update && rollout) {
+          if (!isInRollout(rollout)) {
+            log(`${info.name} not in ${rollout}% rollout, ignored`);
+            continue;
+          }
+          log(`${info.name} in ${rollout}% rollout, continue`);
         }
-        log(`in ${rollout}% rollout, continue`);
-      }
-      info.description = info.description ?? '';
-      updateInfoRef.current = info;
-      setUpdateInfo(info);
-      if (info.expired) {
-        if (
-          options.onPackageExpired &&
-          (await options.onPackageExpired(info)) === false
-        ) {
-          log('onPackageExpired returned false, skipping');
-          return;
-        }
-        const { downloadUrl } = info;
-        if (downloadUrl && sharedState.apkStatus === null) {
-          if (options.updateStrategy === 'silentAndNow') {
-            if (Platform.OS === 'android' && downloadUrl.endsWith('.apk')) {
-              downloadAndInstallApk(downloadUrl);
-            } else {
-              Linking.openURL(downloadUrl);
+        info.description = info.description ?? '';
+        updateInfoRef.current = info;
+        setUpdateInfo(info);
+        if (info.expired) {
+          if (
+            options.onPackageExpired &&
+            (await options.onPackageExpired(info)) === false
+          ) {
+            log('onPackageExpired returned false, skipping');
+            return;
+          }
+          const { downloadUrl } = info;
+          if (downloadUrl && sharedState.apkStatus === null) {
+            if (options.updateStrategy === 'silentAndNow') {
+              if (Platform.OS === 'android' && downloadUrl.endsWith('.apk')) {
+                downloadAndInstallApk(downloadUrl);
+              } else {
+                Linking.openURL(downloadUrl);
+              }
+              return info;
             }
+            alertUpdate('提示', '您的应用版本已更新，点击更新下载安装新版本', [
+              {
+                text: '更新',
+                onPress: () => {
+                  if (
+                    Platform.OS === 'android' &&
+                    downloadUrl.endsWith('.apk')
+                  ) {
+                    downloadAndInstallApk(downloadUrl);
+                  } else {
+                    Linking.openURL(downloadUrl);
+                  }
+                },
+              },
+            ]);
+          }
+        } else if (info.update) {
+          if (
+            options.updateStrategy === 'silentAndNow' ||
+            options.updateStrategy === 'silentAndLater'
+          ) {
+            downloadUpdate(info);
             return info;
           }
-          alertUpdate('提示', '您的应用版本已更新，点击更新下载安装新版本', [
-            {
-              text: '更新',
-              onPress: () => {
-                if (Platform.OS === 'android' && downloadUrl.endsWith('.apk')) {
-                  downloadAndInstallApk(downloadUrl);
-                } else {
-                  Linking.openURL(downloadUrl);
-                }
+          alertUpdate(
+            '提示',
+            '检查到新的版本' + info.name + ',是否下载?\n' + info.description,
+            [
+              { text: '取消', style: 'cancel' },
+              {
+                text: '确定',
+                style: 'default',
+                onPress: () => {
+                  downloadUpdate();
+                },
               },
-            },
-          ]);
+            ],
+          );
         }
-      } else if (info.update) {
-        if (
-          options.updateStrategy === 'silentAndNow' ||
-          options.updateStrategy === 'silentAndLater'
-        ) {
-          downloadUpdate(info);
-          return info;
-        }
-        alertUpdate(
-          '提示',
-          '检查到新的版本' + info.name + ',是否下载?\n' + info.description,
-          [
-            { text: '取消', style: 'cancel' },
-            {
-              text: '确定',
-              style: 'default',
-              onPress: () => {
-                downloadUpdate();
-              },
-            },
-          ],
-        );
+        return info;
       }
-      return info;
     },
     [
       client,
diff --git a/src/type.ts b/src/type.ts
index c0bb679..62b1cb3 100644
--- a/src/type.ts
+++ b/src/type.ts
@@ -1,14 +1,10 @@
-export interface CheckResult {
-  upToDate?: true;
-  expired?: true;
-  downloadUrl?: string;
-  update?: true;
-  name?: string; // version name
-  hash?: string;
-  description?: string;
-  metaInfo?: string;
-  config?: {
-    rollout?: {
+export interface VersionInfo {
+  name: string;
+  hash: string;
+  description: string;
+  metaInfo: string;
+  config: {
+    rollout: {
       [packageVersion: string]: number;
     };
     [key: string]: any;
@@ -16,11 +12,27 @@ export interface CheckResult {
   pdiff?: string;
   diff?: string;
   full?: string;
-  paths?: string[];
+}
+
+interface RootResult {
+  upToDate?: true;
+  expired?: true;
+  downloadUrl?: string;
+  update?: true;
   paused?: 'app' | 'package';
   message?: string;
+  paths?: string[];
 }
 
+export type CheckResult = RootResult & VersionInfo;
+
+export type CheckResultV2 = RootResult & {
+  versions?: VersionInfo[];
+};
+
+export type MixedCheckResult = CheckResult | CheckResultV2;
+
+
 export interface ProgressData {
   hash: string;
   received: number;