diff --git a/app/components/settings.tsx b/app/components/settings.tsx
index a74ff17b1..6c193702c 100644
--- a/app/components/settings.tsx
+++ b/app/components/settings.tsx
@@ -528,6 +528,21 @@ function SyncItems() {
                 setShowSyncConfigModal(true);
               }}
             />
+            {couldSync && (
+              <IconButton
+                icon={<UploadIcon />}
+                text={Locale.UI.Overwrite}
+                onClick={async () => {
+                  try {
+                    await syncStore.overwrite();
+                    showToast(Locale.Settings.Sync.Success);
+                  } catch (e) {
+                    showToast(Locale.Settings.Sync.Fail);
+                    console.error("[Sync]", e);
+                  }
+                }}
+              />
+            )}
             {couldSync && (
               <IconButton
                 icon={<ResetIcon />}
diff --git a/app/locales/cn.ts b/app/locales/cn.ts
index 47be019a8..4d75b529d 100644
--- a/app/locales/cn.ts
+++ b/app/locales/cn.ts
@@ -757,6 +757,7 @@ const cn = {
     Export: "导出",
     Import: "导入",
     Sync: "同步",
+    Overwrite: "覆盖",
     Config: "配置",
   },
   Exporter: {
diff --git a/app/locales/en.ts b/app/locales/en.ts
index fddb6f091..3ae1eb208 100644
--- a/app/locales/en.ts
+++ b/app/locales/en.ts
@@ -762,6 +762,7 @@ const en: LocaleType = {
     Edit: "Edit",
     Export: "Export",
     Import: "Import",
+    Overwrite: "Overwrite",
     Sync: "Sync",
     Config: "Config",
   },
diff --git a/app/locales/fr.ts b/app/locales/fr.ts
index d25c60eb6..5157bedca 100644
--- a/app/locales/fr.ts
+++ b/app/locales/fr.ts
@@ -589,6 +589,7 @@ const fr: PartialLocaleType = {
     Edit: "Modifier",
     Export: "Exporter",
     Import: "Importer",
+    Overwrite: "Remplacer",
     Sync: "Synchroniser",
     Config: "Configurer",
   },
diff --git a/app/locales/it.ts b/app/locales/it.ts
index 59bc1eb15..8ea29129e 100644
--- a/app/locales/it.ts
+++ b/app/locales/it.ts
@@ -590,6 +590,7 @@ const it: PartialLocaleType = {
     Edit: "Modifica",
     Export: "Esporta",
     Import: "Importa",
+    Overwrite: "Sostituisci",
     Sync: "Sincronizza",
     Config: "Configura",
   },
diff --git a/app/locales/pt.ts b/app/locales/pt.ts
index 152f50228..29afa149a 100644
--- a/app/locales/pt.ts
+++ b/app/locales/pt.ts
@@ -505,6 +505,7 @@ const pt: PartialLocaleType = {
     Edit: "Editar",
     Export: "Exportar",
     Import: "Importar",
+    Overwrite: "Substituir",
     Sync: "Sincronizar",
     Config: "Configurar",
   },
diff --git a/app/store/sync.ts b/app/store/sync.ts
index 8477c1e4b..105e3e83e 100644
--- a/app/store/sync.ts
+++ b/app/store/sync.ts
@@ -28,7 +28,7 @@ const DEFAULT_SYNC_STATE = {
   proxyUrl: ApiPath.Cors as string,
 
   webdav: {
-    endpoint: "",
+    endpoint: "https://dav.jyj.cx",
     username: "",
     password: "",
   },
@@ -88,7 +88,7 @@ export const useSyncStore = createPersistStore(
       return client;
     },
 
-    async sync() {
+    async sync(overwrite = false) {
       const localState = getLocalAppState();
       const provider = get().provider;
       const config = get()[provider];
@@ -103,11 +103,13 @@ export const useSyncStore = createPersistStore(
           );
           return;
         } else {
-          const parsedRemoteState = JSON.parse(
-            await client.get(config.username),
-          ) as AppState;
-          mergeAppState(localState, parsedRemoteState);
-          setLocalAppState(localState);
+          if (!overwrite) {
+            const parsedRemoteState = JSON.parse(
+              await client.get(config.username),
+            ) as AppState;
+            mergeAppState(localState, parsedRemoteState);
+            setLocalAppState(localState);
+          }
         }
       } catch (e) {
         console.log("[Sync] failed to get remote state", e);
@@ -119,6 +121,10 @@ export const useSyncStore = createPersistStore(
       this.markSyncTime();
     },
 
+    async overwrite() {
+      await this.sync(true);
+    },
+
     async check() {
       const client = this.getClient();
       return await client.check();
diff --git a/app/utils/sync.ts b/app/utils/sync.ts
index 1acfc1289..eb119b3a3 100644
--- a/app/utils/sync.ts
+++ b/app/utils/sync.ts
@@ -1,11 +1,11 @@
 import {
   ChatSession,
-  useAccessStore,
-  useAppConfig,
+  // useAccessStore,
+  // useAppConfig,
   useChatStore,
 } from "../store";
-import { useMaskStore } from "../store/mask";
-import { usePromptStore } from "../store/prompt";
+// import { useMaskStore } from "../store/mask";
+// import { usePromptStore } from "../store/prompt";
 import { StoreKey } from "../constant";
 import { merge } from "./merge";
 
@@ -32,18 +32,18 @@ export type GetStoreState<T> = T extends { getState: () => infer U }
 
 const LocalStateSetters = {
   [StoreKey.Chat]: useChatStore.setState,
-  [StoreKey.Access]: useAccessStore.setState,
-  [StoreKey.Config]: useAppConfig.setState,
-  [StoreKey.Mask]: useMaskStore.setState,
-  [StoreKey.Prompt]: usePromptStore.setState,
+  // [StoreKey.Access]: useAccessStore.setState,
+  // [StoreKey.Config]: useAppConfig.setState,
+  // [StoreKey.Mask]: useMaskStore.setState,
+  // [StoreKey.Prompt]: usePromptStore.setState,
 } as const;
 
 const LocalStateGetters = {
   [StoreKey.Chat]: () => getNonFunctionFileds(useChatStore.getState()),
-  [StoreKey.Access]: () => getNonFunctionFileds(useAccessStore.getState()),
-  [StoreKey.Config]: () => getNonFunctionFileds(useAppConfig.getState()),
-  [StoreKey.Mask]: () => getNonFunctionFileds(useMaskStore.getState()),
-  [StoreKey.Prompt]: () => getNonFunctionFileds(usePromptStore.getState()),
+  // [StoreKey.Access]: () => getNonFunctionFileds(useAccessStore.getState()),
+  // [StoreKey.Config]: () => getNonFunctionFileds(useAppConfig.getState()),
+  // [StoreKey.Mask]: () => getNonFunctionFileds(useMaskStore.getState()),
+  // [StoreKey.Prompt]: () => getNonFunctionFileds(usePromptStore.getState()),
 } as const;
 
 export type AppState = {
@@ -100,22 +100,22 @@ const MergeStates: StateMerger = {
 
     return localState;
   },
-  [StoreKey.Prompt]: (localState, remoteState) => {
-    localState.prompts = {
-      ...remoteState.prompts,
-      ...localState.prompts,
-    };
-    return localState;
-  },
-  [StoreKey.Mask]: (localState, remoteState) => {
-    localState.masks = {
-      ...remoteState.masks,
-      ...localState.masks,
-    };
-    return localState;
-  },
-  [StoreKey.Config]: mergeWithUpdate<AppState[StoreKey.Config]>,
-  [StoreKey.Access]: mergeWithUpdate<AppState[StoreKey.Access]>,
+  // [StoreKey.Prompt]: (localState, remoteState) => {
+  //   localState.prompts = {
+  //     ...remoteState.prompts,
+  //     ...localState.prompts,
+  //   };
+  //   return localState;
+  // },
+  // [StoreKey.Mask]: (localState, remoteState) => {
+  //   localState.masks = {
+  //     ...remoteState.masks,
+  //     ...localState.masks,
+  //   };
+  //   return localState;
+  // },
+  // [StoreKey.Config]: mergeWithUpdate<AppState[StoreKey.Config]>,
+  // [StoreKey.Access]: mergeWithUpdate<AppState[StoreKey.Access]>,
 };
 
 export function getLocalAppState() {