diff --git a/.gitignore b/.gitignore
index 7c63903..80ec3be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,3 +46,4 @@ Example/**/.pushy
 Example/testHotUpdate/artifacts
 
 yarn-error.log
+.cursor/mcp.json
diff --git a/lib/main.ts b/lib/main.ts
index bc7d0e1..0f3bb6b 100644
--- a/lib/main.ts
+++ b/lib/main.ts
@@ -16,7 +16,7 @@ import {
   UpdateAvailableResult,
   UpdateEventsListener,
 } from './type';
-import { assertRelease, logger, promiseAny, testUrls } from './utils';
+import { assertRelease, enhancedFetch, logger, promiseAny, testUrls } from './utils';
 export { setCustomEndpoints };
 const {
   version: v,
@@ -158,7 +158,7 @@ export async function checkUpdate(APPKEY: string) {
   };
   let resp;
   try {
-    resp = await fetch(getCheckUrl(APPKEY), fetchPayload);
+    resp = await enhancedFetch(getCheckUrl(APPKEY), fetchPayload);
   } catch (e) {
     report({
       type: 'errorChecking',
@@ -169,7 +169,7 @@ export async function checkUpdate(APPKEY: string) {
       try {
         resp = await promiseAny(
           backupEndpoints.map(endpoint =>
-            fetch(getCheckUrl(APPKEY, endpoint), fetchPayload),
+            enhancedFetch(getCheckUrl(APPKEY, endpoint), fetchPayload),
           ),
         );
       } catch {}
diff --git a/lib/utils.ts b/lib/utils.ts
index e38e8dc..b998c03 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -33,7 +33,7 @@ const ping =
     : async (url: string) => {
         let pingFinished = false;
         return Promise.race([
-          fetch(url, {
+          enhancedFetch(url, {
             method: 'HEAD',
           })
             .then(({ status, statusText }) => {
@@ -73,3 +73,34 @@ export const testUrls = async (urls?: string[]) => {
   logger('all ping failed, use first url:', urls[0]);
   return urls[0];
 };
+
+
+
+// export const isAndroid70AndBelow = () => {
+//   // android 7.0 and below devices do not support letsencrypt cert
+//   // https://letsencrypt.org/2023/07/10/cross-sign-expiration/
+//   return Platform.OS === 'android' && Platform.Version <= 24;
+// };
+
+export const enhancedFetch = async (
+  url: string,
+  params: Parameters<typeof fetch>[1],
+  isRetry = false,
+) => {
+  return fetch(url, params)
+    .then((r) => {
+      if (r.ok) {
+        return r;
+      }
+      throw new Error(`${r.status} ${r.statusText}`);
+    })
+    .catch((e) => {
+      logger('fetch error', url, e);
+      if (isRetry) {
+        throw e;
+      }
+      logger('trying fallback to http');
+      return enhancedFetch(url.replace('https', 'http'), params, true);
+    });
+};
+
diff --git a/package.json b/package.json
index 9e77f73..fc6a613 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-native-update",
-  "version": "9.2.5",
+  "version": "9.2.6",
   "description": "react-native hot update",
   "main": "lib/index.ts",
   "scripts": {