diff --git a/app.js b/app.js
index b3955a1..8d831ab 100644
--- a/app.js
+++ b/app.js
@@ -1,6 +1,5 @@
 const proxy = require("udp-proxy")
 const cp = require("child_process")
-const cloud = require("./secret")
 const appcenter = require("./appcenter")
 const regionServer = require("./regionServer")
 const {
@@ -38,7 +37,6 @@ const onExit = () => {
         }
         appcenter.startup()
         let conf = await initConfig()
-        cloud.init(conf)
         checkPortIsUsing()
         checkGameIsRunning()
         log("检查更新")
diff --git a/native.d.ts b/native.d.ts
index 51fa9ee..54fa858 100644
--- a/native.d.ts
+++ b/native.d.ts
@@ -1,10 +1,11 @@
 export function selectGameExecutable(): string
 export function checkGameIsRunning(processName: string): boolean
 export function whoUseThePort(port: number): object
-export function copyToClipboard(value: string): any
+export function copyToClipboard(value: string): void
 export function checkSnapFastcall(): boolean
-export function enablePrivilege(): any
-export function getDeviceInfo(): any
+export function enablePrivilege(): void
+export function getDeviceInfo(): object
+export function getMACAddress(): string
 export function getDeviceID(): string
 export function openUrl(url: string): number
-export function pause(): any
+export function pause(): void
diff --git a/native/src/main.cc b/native/src/main.cc
index 7ba065a..6785503 100644
--- a/native/src/main.cc
+++ b/native/src/main.cc
@@ -12,7 +12,7 @@ using Wmi::Win32_ComputerSystem, Wmi::Win32_OperatingSystem, Wmi::retrieveWmi;
 
 namespace native {
 
-    Value checkGameIsRunning(const CallbackInfo &info) {
+    Value CheckGameIsRunning(const CallbackInfo &info) {
         Env env = info.Env();
         if (info.Length() != 1 || !info[0].IsString()) {
             TypeError::New(env, "Wrong arguments").ThrowAsJavaScriptException();
@@ -34,7 +34,7 @@ namespace native {
         return Napi::Boolean::New(env, isRunning);
     }
 
-    Value selectGameExecutable(const CallbackInfo &info) {
+    Value SelectGameExecutable(const CallbackInfo &info) {
         Env env = info.Env();
         Napi::String path;
         if (OpenFile(env, path) != ERROR_SUCCESS) {
@@ -44,7 +44,7 @@ namespace native {
         return path;
     }
 
-    Value whoUseThePort(const CallbackInfo &info) {
+    Value WhoUseThePort(const CallbackInfo &info) {
         Env env = info.Env();
         if (info.Length() != 1 || !info[0].IsNumber()) {
             TypeError::New(env, "Wrong arguments").ThrowAsJavaScriptException();
@@ -89,7 +89,7 @@ namespace native {
         return ret;
     }
 
-    Value getDeviceID(const CallbackInfo &info) {
+    Value GetDeviceID(const CallbackInfo &info) {
         Env env = info.Env();
         wstring wd;
         if (RegUtils::GetString(HKEY_CURRENT_USER, L"SOFTWARE\\miHoYoSDK", L"MIHOYOSDK_DEVICE_ID", wd) != ERROR_SUCCESS) {
@@ -99,7 +99,7 @@ namespace native {
         return Napi::String::New(env, id.substr(0, 8) + "-" + id.substr(8, 4) + "-" + id.substr(12, 4) + "-" + id.substr(16, 4) + "-" + id.substr(20, 12));
     }
 
-    Value getDeviceInfo(const CallbackInfo &info) {
+    Value GetDeviceInfo(const CallbackInfo &info) {
         Env env = info.Env();
         HDC desktop = GetDC(nullptr);
         int sw = GetDeviceCaps(desktop, DESKTOPHORZRES);
@@ -140,13 +140,34 @@ namespace native {
         return obj;
     }
 
-    Value enablePrivilege(const CallbackInfo &info) {
+    Value EnablePrivilege(const CallbackInfo &info) {
         Env env = info.Env();
-        EnablePrivilege(env, L"SeDebugPrivilege");
+        HANDLE hToken;
+        if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken)) {
+            Error::New(env, "OpenProcessToken error: " + to_string(GetLastError())).ThrowAsJavaScriptException();
+            return env.Undefined();
+        }
+        TOKEN_PRIVILEGES tp;
+        ZeroMemory(&tp, sizeof(tp));
+        tp.PrivilegeCount = 1;
+        tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+        if (!LookupPrivilegeValue(nullptr, L"SeDebugPrivilege", &tp.Privileges[0].Luid)) {
+            Error::New(env, "LookupPrivilegeValue error: " + to_string(GetLastError())).ThrowAsJavaScriptException();
+            return env.Undefined();
+        }
+        if (!AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(tp), nullptr, nullptr)) {
+            Error::New(env, "AdjustTokenPrivileges error: " + to_string(GetLastError())).ThrowAsJavaScriptException();
+            return env.Undefined();
+        }
+        if (GetLastError() == ERROR_NOT_ALL_ASSIGNED) {
+            Error::New(env, "The token does not have the specified privilege.").ThrowAsJavaScriptException();
+            return env.Undefined();
+        }
+        CloseHandle(hToken);
         return env.Undefined();
     }
 
-    Value copyToClipboard(const CallbackInfo &info) {
+    Value CopyToClipboard(const CallbackInfo &info) {
         Env env = info.Env();
         string text = info[0].As<Napi::String>().Utf8Value();
         if (OpenClipboard(nullptr)) {
@@ -162,38 +183,64 @@ namespace native {
         return env.Undefined();
     }
 
-    Value pause(const CallbackInfo &info) {
+    Value Pause(const CallbackInfo &info) {
         while(!_kbhit()) {
             Sleep(10);
         }
         return info.Env().Undefined();
     }
 
-    Value openUrl(const CallbackInfo &info) {
+    Value OpenUrl(const CallbackInfo &info) {
         Env env = info.Env();
         wstring url = StringToWString(info[0].As<Napi::String>().Utf8Value());
         HINSTANCE retcode = ShellExecute(GetConsoleWindow(), L"open", url.c_str(), nullptr, nullptr, SW_SHOWNORMAL);
         return Napi::Number::New(env, (INT_PTR)retcode); // NOLINT(cppcoreguidelines-narrowing-conversions)
     }
 
-    Value checkSnapFastcall(const CallbackInfo &info) {
+    Value CheckSnapFastcall(const CallbackInfo &info) {
         Env env = info.Env();
         wstring queryResult;
         RegUtils::GetString(HKEY_CLASSES_ROOT, L"snapgenshin", L"", queryResult);
         return Napi::Boolean::New(env, wcscmp(queryResult.c_str(), L"URL:snapgenshin") == 0);
     }
 
+    Value GetMACAddress(const CallbackInfo &info) {
+        Env env = info.Env();
+        ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
+        auto pAdapterInfo = (IP_ADAPTER_INFO *) malloc(ulOutBufLen);
+        if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) != ERROR_SUCCESS) {
+            pAdapterInfo = (IP_ADAPTER_INFO *) malloc(ulOutBufLen);
+            if (GetAdaptersInfo(pAdapterInfo, &ulOutBufLen) != ERROR_SUCCESS) { return env.Undefined(); }
+        }
+        PIP_ADAPTER_INFO pAdapter = pAdapterInfo;
+        while (pAdapter) {
+            if (pAdapter->Address[0] == 0x00) {
+                pAdapter = pAdapter->Next;
+                continue;
+            }
+            auto addr = (char *) malloc(16);
+            char *result;
+            ToHex((char *)pAdapter->Address, 6, &result);
+            auto ret = Napi::String::New(env, result);
+            free(result);
+            free(pAdapterInfo);
+            return ret;
+        }
+        return env.Undefined();
+    }
+
     Object init(Env env, Object exports) {
-        exports.Set("pause", Function::New(env, pause));
-        exports.Set("openUrl", Function::New(env, openUrl));
-        exports.Set("getDeviceID", Function::New(env, getDeviceID));
-        exports.Set("getDeviceInfo", Function::New(env, getDeviceInfo));
-        exports.Set("whoUseThePort", Function::New(env, whoUseThePort));
-        exports.Set("copyToClipboard", Function::New(env, copyToClipboard));
-        exports.Set("enablePrivilege", Function::New(env, enablePrivilege));
-        exports.Set("checkSnapFastcall", Function::New(env, checkSnapFastcall));
-        exports.Set("checkGameIsRunning", Function::New(env, checkGameIsRunning));
-        exports.Set("selectGameExecutable", Function::New(env, selectGameExecutable));
+        exports.Set("pause", Function::New(env, Pause));
+        exports.Set("openUrl", Function::New(env, OpenUrl));
+        exports.Set("getDeviceID", Function::New(env, GetDeviceID));
+        exports.Set("getMACAddress", Function::New(env, GetMACAddress));
+        exports.Set("getDeviceInfo", Function::New(env, GetDeviceInfo));
+        exports.Set("whoUseThePort", Function::New(env, WhoUseThePort));
+        exports.Set("copyToClipboard", Function::New(env, CopyToClipboard));
+        exports.Set("enablePrivilege", Function::New(env, EnablePrivilege));
+        exports.Set("checkSnapFastcall", Function::New(env, CheckSnapFastcall));
+        exports.Set("checkGameIsRunning", Function::New(env, CheckGameIsRunning));
+        exports.Set("selectGameExecutable", Function::New(env, SelectGameExecutable));
         return exports;
     }
 
diff --git a/native/src/utils.cc b/native/src/utils.cc
index 1ae89b2..f35a464 100644
--- a/native/src/utils.cc
+++ b/native/src/utils.cc
@@ -29,6 +29,18 @@ void Log(Env env, const wstring &msg) {
     logFunc.Call({ Napi::String::New(env, WStringToString(msg)) });
 }
 
+char* ToHex(const char *bin, int binsz, char **result) {
+    char hexStr[] = "0123456789ABCDEF";
+    if (!(*result = (char *) malloc(binsz * 2 + 1))) return nullptr;
+    (*result)[binsz * 2] = 0;
+    if (!binsz) return nullptr;
+    for (int i = 0; i < binsz; i++) {
+        (*result)[i * 2 + 0] = hexStr[(bin[i] >> 4) & 0x0F];
+        (*result)[i * 2 + 1] = hexStr[(bin[i]) & 0x0F];
+    }
+    return *result;
+}
+
 LSTATUS OpenFile(Env env, Napi::String &result, HWND parent) {
     OPENFILENAME open;
     ZeroMemory(&open, sizeof(open));
@@ -48,29 +60,3 @@ LSTATUS OpenFile(Env env, Napi::String &result, HWND parent) {
         return ERROR_ERRORS_ENCOUNTERED;
     }
 }
-
-BOOL EnablePrivilege(Env env, const wstring &name) {
-    HANDLE hToken;
-    if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken)) {
-        Error::New(env, "OpenProcessToken error: " + to_string(GetLastError())).ThrowAsJavaScriptException();
-        return FALSE;
-    }
-    TOKEN_PRIVILEGES tp;
-    ZeroMemory(&tp, sizeof(tp));
-    tp.PrivilegeCount = 1;
-    tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-    if (!LookupPrivilegeValue(nullptr, name.c_str(), &tp.Privileges[0].Luid)) {
-        Error::New(env, "LookupPrivilegeValue error: " + to_string(GetLastError())).ThrowAsJavaScriptException();
-        return FALSE;
-    }
-    if (!AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(tp), nullptr, nullptr)) {
-        Error::New(env, "AdjustTokenPrivileges error: " + to_string(GetLastError())).ThrowAsJavaScriptException();
-        return FALSE;
-    }
-    if (GetLastError() == ERROR_NOT_ALL_ASSIGNED) {
-        Error::New(env, "The token does not have the specified privilege.").ThrowAsJavaScriptException();
-        return FALSE;
-    }
-    CloseHandle(hToken);
-    return TRUE;
-}
diff --git a/native/src/utils.h b/native/src/utils.h
index 1f0da1c..c9c4a48 100644
--- a/native/src/utils.h
+++ b/native/src/utils.h
@@ -5,7 +5,7 @@
 string WStringToString(const wstring &src, UINT codePage = CP_ACP);
 wstring StringToWString(const string &src, UINT codePage = CP_ACP);
 LSTATUS OpenFile(Env env, Napi::String &result, HWND parent = GetConsoleWindow());
-BOOL EnablePrivilege(Env env, const wstring &name);
+char* ToHex(const char *bin, int binsz, char **result);
 void Log(Env env, const string &msg);
 void Log(Env env, const wstring &msg);
 
diff --git a/utils.js b/utils.js
index 6d86fc8..6f11ff8 100644
--- a/utils.js
+++ b/utils.js
@@ -206,12 +206,15 @@ const upload = async data => {
 }
 
 const checkUpdate = async () => {
-    const data = (await cloud.get("/latest-version")).data
+    const data = (await cloud.fetchBucket("/latest.json")).data
     if (data["vc"] !== version.code) {
         log(`有可用更新: ${version.name} => ${data["vn"]}`)
         log(`更新内容: \n${data["ds"]}`)
         log("下载地址: https://github.com/HolographicHat/genshin-achievement-export/releases\n")
     }
+    if (data["fc"] === true) {
+        process.exit(410)
+    }
 }
 
 const brotliCompressSync = data => zlib.brotliCompressSync(data,{