diff --git a/.gitmodules b/.gitmodules
index 6f0ff02..bc68d6a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "packages/libusb_ffi"]
 	path = packages/libusb_ffi
 	url = git@github.com:haorendashu/libusb_ffi.git
+[submodule "packages/relay_isar_db"]
+	path = packages/relay_isar_db
+	url = git@github.com:haorendashu/relay_isar_db.git
diff --git a/lib/component/user/nesigner_login_dialog.dart b/lib/component/user/nesigner_login_dialog.dart
index 7e41b5f..860de3b 100644
--- a/lib/component/user/nesigner_login_dialog.dart
+++ b/lib/component/user/nesigner_login_dialog.dart
@@ -209,8 +209,6 @@ class _NesignerLoginDialog extends State<NesignerLoginDialog> {
       return;
     }
 
-    var aesKey = HashUtil.md5(pin);
-
     if (bingKey) {
       if (StringUtil.isBlank(privateKey)) {
         BotToast.showText(text: s.Input_can_not_be_null);
@@ -221,9 +219,9 @@ class _NesignerLoginDialog extends State<NesignerLoginDialog> {
         privateKey = Nip19.decode(privateKey);
       }
 
-      return RouterUtil.back(context, "$aesKey:$privateKey");
+      return RouterUtil.back(context, "$pin:$privateKey");
     }
 
-    return RouterUtil.back(context, aesKey);
+    return RouterUtil.back(context, pin);
   }
 }
diff --git a/lib/component/user/user_login_dialog.dart b/lib/component/user/user_login_dialog.dart
index df52ebf..c4be91d 100644
--- a/lib/component/user/user_login_dialog.dart
+++ b/lib/component/user/user_login_dialog.dart
@@ -48,9 +48,9 @@ class _UserLoginDialog extends CustState<UserLoginDialog> {
     }
   }
 
-  void checkNesigner() {
+  Future<void> checkNesigner() async {
     try {
-      var exist = NesignerUtil.checkNesignerExist();
+      var exist = await NesignerUtil.checkNesignerExist();
       if (exist != existNesigner) {
         setState(() {
           existNesigner = exist;
@@ -165,11 +165,11 @@ class _UserLoginDialog extends CustState<UserLoginDialog> {
     }
 
     var strs = nesignerInputStr.split(":");
-    var aesKey = strs[0];
+    var pinCode = strs[0];
 
     var cancelFunc = BotToast.showLoading();
 
-    var nesigner = Nesigner(aesKey);
+    var nesigner = Nesigner(pinCode);
     try {
       if (!(await nesigner.start())) {
         BotToast.showText(text: "Connect to nesigner fail.");
@@ -178,9 +178,7 @@ class _UserLoginDialog extends CustState<UserLoginDialog> {
 
       if (strs.length > 1) {
         var privateKey = strs[1];
-        var aesKeyBin = HEX.decode(aesKey);
-        var updateResult =
-            await nesigner.updateKey(Uint8List.fromList(aesKeyBin), privateKey);
+        var updateResult = await nesigner.updateKey(pinCode, privateKey);
         print("update result $updateResult");
       }
 
@@ -196,7 +194,7 @@ class _UserLoginDialog extends CustState<UserLoginDialog> {
         return;
       }
 
-      var keyStr = Nesigner.genKey(aesKey, pubkey: pubkey);
+      var keyStr = Nesigner.genKey(pinCode, pubkey: pubkey);
       keyProvider.addKey(keyStr);
     } finally {
       try {
diff --git a/lib/const/base.dart b/lib/const/base.dart
index 6291fa1..6e7b584 100644
--- a/lib/const/base.dart
+++ b/lib/const/base.dart
@@ -11,5 +11,6 @@ class Base {
 
   static double BASE_FONT_SIZE = 15;
 
-  static String USER_AGENT = "${Base.APP_NAME} ${PlatformUtil.getPlatformName()} ${Base.VERSION_NAME}";
+  static String USER_AGENT =
+      "${Base.APP_NAME} ${PlatformUtil.getPlatformName()} ${Base.VERSION_NAME}";
 }
diff --git a/lib/data/db.dart b/lib/data/db.dart
index af60185..7402e0a 100644
--- a/lib/data/db.dart
+++ b/lib/data/db.dart
@@ -1,6 +1,8 @@
 import 'package:nostr_sdk/utils/db_util.dart';
 import 'package:sqflite/sqflite.dart';
 
+import '../const/base.dart';
+
 class DB {
   static const _VERSION = 2;
 
@@ -9,7 +11,7 @@ class DB {
   static Database? _database;
 
   static init() async {
-    String path = await DBUtil.getPath(_dbName);
+    String path = await DBUtil.getPath(Base.APP_NAME, _dbName);
     print("path $path");
 
     try {
diff --git a/lib/provider/build_in_relay_provider.dart b/lib/provider/build_in_relay_provider.dart
index ead84be..ee19c59 100644
--- a/lib/provider/build_in_relay_provider.dart
+++ b/lib/provider/build_in_relay_provider.dart
@@ -84,7 +84,7 @@ class BuildInRelayProvider extends ChangeNotifier {
 
   RelayManager _getRelayManager() {
     if (_relayManager == null) {
-      _relayManager = RelayManager(rootIsolateToken);
+      _relayManager = RelayManager(rootIsolateToken, Base.APP_NAME);
       _relayManager!.openFilterCheck = true;
       _relayManager!.openDB = false;
       // _relayManager!.trafficCounter = trafficCounterProvider;
diff --git a/lib/provider/key_provider.dart b/lib/provider/key_provider.dart
index 2a3d3de..fd2153c 100644
--- a/lib/provider/key_provider.dart
+++ b/lib/provider/key_provider.dart
@@ -135,12 +135,12 @@ class KeyProvider extends ChangeNotifier {
     var key = keysMap[pubkey];
     if (StringUtil.isNotBlank(key)) {
       if (Nesigner.isNesignerKey(key!)) {
-        var aesKey = Nesigner.getAesKeyFromKey(key);
-        if (StringUtil.isBlank(aesKey)) {
+        var pinCode = Nesigner.getPinCodeFromKey(key);
+        if (StringUtil.isBlank(pinCode)) {
           return null;
         }
 
-        nesigner = Nesigner(aesKey, pubkey: pubkey);
+        nesigner = Nesigner(pinCode, pubkey: pubkey);
         await nesigner.start();
         _nesignerMap[pubkey] = nesigner;
         return nesigner;
diff --git a/linux/flutter/generated_plugin_registrant.cc b/linux/flutter/generated_plugin_registrant.cc
index 649c5bc..1e1c195 100644
--- a/linux/flutter/generated_plugin_registrant.cc
+++ b/linux/flutter/generated_plugin_registrant.cc
@@ -6,20 +6,28 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <flutter_libserialport/flutter_libserialport_plugin.h>
 #include <flutter_nesigner_sdk/flutter_nesigner_sdk_plugin.h>
 #include <flutter_secure_storage_linux/flutter_secure_storage_linux_plugin.h>
+#include <isar_flutter_libs/isar_flutter_libs_plugin.h>
 #include <nesigner_adapter/nesigner_adapter_plugin.h>
 #include <open_file_linux/open_file_linux_plugin.h>
 #include <screen_retriever_linux/screen_retriever_linux_plugin.h>
 #include <window_manager/window_manager_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
+  g_autoptr(FlPluginRegistrar) flutter_libserialport_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterLibserialportPlugin");
+  flutter_libserialport_plugin_register_with_registrar(flutter_libserialport_registrar);
   g_autoptr(FlPluginRegistrar) flutter_nesigner_sdk_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterNesignerSdkPlugin");
   flutter_nesigner_sdk_plugin_register_with_registrar(flutter_nesigner_sdk_registrar);
   g_autoptr(FlPluginRegistrar) flutter_secure_storage_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterSecureStorageLinuxPlugin");
   flutter_secure_storage_linux_plugin_register_with_registrar(flutter_secure_storage_linux_registrar);
+  g_autoptr(FlPluginRegistrar) isar_flutter_libs_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "IsarFlutterLibsPlugin");
+  isar_flutter_libs_plugin_register_with_registrar(isar_flutter_libs_registrar);
   g_autoptr(FlPluginRegistrar) nesigner_adapter_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "NesignerAdapterPlugin");
   nesigner_adapter_plugin_register_with_registrar(nesigner_adapter_registrar);
diff --git a/linux/flutter/generated_plugins.cmake b/linux/flutter/generated_plugins.cmake
index f0022b6..01ab225 100644
--- a/linux/flutter/generated_plugins.cmake
+++ b/linux/flutter/generated_plugins.cmake
@@ -3,8 +3,10 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  flutter_libserialport
   flutter_nesigner_sdk
   flutter_secure_storage_linux
+  isar_flutter_libs
   nesigner_adapter
   open_file_linux
   screen_retriever_linux
diff --git a/macos/Flutter/GeneratedPluginRegistrant.swift b/macos/Flutter/GeneratedPluginRegistrant.swift
index 25dfb42..7ddef2c 100644
--- a/macos/Flutter/GeneratedPluginRegistrant.swift
+++ b/macos/Flutter/GeneratedPluginRegistrant.swift
@@ -8,8 +8,10 @@ import Foundation
 import cryptography_flutter
 import device_info_plus
 import flutter_inappwebview_macos
+import flutter_libserialport
 import flutter_nesigner_sdk
 import flutter_secure_storage_macos
+import isar_flutter_libs
 import nesigner_adapter
 import open_file_mac
 import path_provider_foundation
@@ -22,8 +24,10 @@ func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   CryptographyFlutterPlugin.register(with: registry.registrar(forPlugin: "CryptographyFlutterPlugin"))
   DeviceInfoPlusMacosPlugin.register(with: registry.registrar(forPlugin: "DeviceInfoPlusMacosPlugin"))
   InAppWebViewFlutterPlugin.register(with: registry.registrar(forPlugin: "InAppWebViewFlutterPlugin"))
+  FlutterLibserialportPlugin.register(with: registry.registrar(forPlugin: "FlutterLibserialportPlugin"))
   FlutterNesignerSdkPlugin.register(with: registry.registrar(forPlugin: "FlutterNesignerSdkPlugin"))
   FlutterSecureStoragePlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStoragePlugin"))
+  IsarFlutterLibsPlugin.register(with: registry.registrar(forPlugin: "IsarFlutterLibsPlugin"))
   NesignerAdapterPlugin.register(with: registry.registrar(forPlugin: "NesignerAdapterPlugin"))
   OpenFilePlugin.register(with: registry.registrar(forPlugin: "OpenFilePlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
diff --git a/packages/flutter_nesigner_sdk b/packages/flutter_nesigner_sdk
index eef82e1..9190b3c 160000
--- a/packages/flutter_nesigner_sdk
+++ b/packages/flutter_nesigner_sdk
@@ -1 +1 @@
-Subproject commit eef82e14fdbd5a3564668c785d4a11dd521322cb
+Subproject commit 9190b3c0c5a7d8f790a88e6c0afd7da34b4b190a
diff --git a/packages/nesigner_adapter b/packages/nesigner_adapter
index cfbd39d..456b5c1 160000
--- a/packages/nesigner_adapter
+++ b/packages/nesigner_adapter
@@ -1 +1 @@
-Subproject commit cfbd39dc3c90c25f10a22d1a941678238afdb0b1
+Subproject commit 456b5c12165fb8f2321b538dc3089cbbd9f16223
diff --git a/packages/nostr_sdk b/packages/nostr_sdk
index c8b1491..b7b3456 160000
--- a/packages/nostr_sdk
+++ b/packages/nostr_sdk
@@ -1 +1 @@
-Subproject commit c8b1491126aab6c42c7b21f04d6eaa293d277b89
+Subproject commit b7b34561943c9732bba0dbc3c60b8be5c4ed4c00
diff --git a/packages/relay_isar_db b/packages/relay_isar_db
new file mode 160000
index 0000000..84a7c0a
--- /dev/null
+++ b/packages/relay_isar_db
@@ -0,0 +1 @@
+Subproject commit 84a7c0a590981bb2333387466bc2da6b405ebad2
diff --git a/packages/relay_sdk b/packages/relay_sdk
index 28d2c3b..549394d 160000
--- a/packages/relay_sdk
+++ b/packages/relay_sdk
@@ -1 +1 @@
-Subproject commit 28d2c3bcee55ae97016d52d754a4679e371561eb
+Subproject commit 549394d570ebc7362ed571aeff8b4f4bee0190c1
diff --git a/pubspec.lock b/pubspec.lock
index f7ebb66..0b64792 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -242,6 +242,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
+  dylib:
+    dependency: transitive
+    description:
+      name: dylib
+      sha256: bf609b3eb6492a3309b3d1dbe8f83a4031de5535dd7686be33487051cc760bb0
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.3"
   fake_async:
     dependency: transitive
     description:
@@ -375,6 +383,15 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.13.1"
+  flutter_libserialport:
+    dependency: transitive
+    description:
+      path: "."
+      ref: HEAD
+      resolved-ref: "3d80a2612d65e0bec85a71f183b0134755ee9123"
+      url: "https://github.com/haorendashu/flutter_libserialport"
+    source: git
+    version: "0.5.0"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -525,6 +542,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.19.0"
+  isar:
+    dependency: transitive
+    description:
+      name: isar
+      sha256: e17a9555bc7f22ff26568b8c64d019b4ffa2dc6bd4cb1c8d9b269aefd32e53ad
+      url: "https://pub.isar-community.dev"
+    source: hosted
+    version: "3.1.8"
+  isar_flutter_libs:
+    dependency: transitive
+    description:
+      name: isar_flutter_libs
+      sha256: "78710781e658ce4bff59b3f38c5b2735e899e627f4e926e1221934e77b95231a"
+      url: "https://pub.isar-community.dev"
+    source: hosted
+    version: "3.1.8"
   js:
     dependency: transitive
     description:
@@ -573,13 +606,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.1"
-  libusb:
+  libserialport:
     dependency: transitive
     description:
-      path: "packages/libusb_ffi"
-      relative: true
-    source: path
-    version: "0.4.23-dev.1+1"
+      name: libserialport
+      sha256: "392e1592def65282429832ec66fa25e9e163d3b37716b97691482e2406720727"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.0+1"
   lints:
     dependency: transitive
     description:
@@ -914,6 +948,13 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.2.5"
+  relay_isar_db:
+    dependency: transitive
+    description:
+      path: "packages/relay_isar_db"
+      relative: true
+    source: path
+    version: "0.0.1"
   relay_sdk:
     dependency: "direct main"
     description:
@@ -1190,6 +1231,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.2"
+  usb_serial:
+    dependency: transitive
+    description:
+      name: usb_serial
+      sha256: a605a600e34e7f28d4e80851ca3999ef747e42e406138887b8a88b8c382a8b07
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.2"
   uuid:
     dependency: transitive
     description:
diff --git a/windows/flutter/generated_plugin_registrant.cc b/windows/flutter/generated_plugin_registrant.cc
index 9d6797c..de861ea 100644
--- a/windows/flutter/generated_plugin_registrant.cc
+++ b/windows/flutter/generated_plugin_registrant.cc
@@ -7,8 +7,10 @@
 #include "generated_plugin_registrant.h"
 
 #include <flutter_inappwebview_windows/flutter_inappwebview_windows_plugin_c_api.h>
+#include <flutter_libserialport/flutter_libserialport_plugin.h>
 #include <flutter_nesigner_sdk/flutter_nesigner_sdk_plugin_c_api.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
+#include <isar_flutter_libs/isar_flutter_libs_plugin.h>
 #include <nesigner_adapter/nesigner_adapter_plugin_c_api.h>
 #include <screen_retriever_windows/screen_retriever_windows_plugin_c_api.h>
 #include <window_manager/window_manager_plugin.h>
@@ -16,10 +18,14 @@
 void RegisterPlugins(flutter::PluginRegistry* registry) {
   FlutterInappwebviewWindowsPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterInappwebviewWindowsPluginCApi"));
+  FlutterLibserialportPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FlutterLibserialportPlugin"));
   FlutterNesignerSdkPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterNesignerSdkPluginCApi"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
+  IsarFlutterLibsPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("IsarFlutterLibsPlugin"));
   NesignerAdapterPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("NesignerAdapterPluginCApi"));
   ScreenRetrieverWindowsPluginCApiRegisterWithRegistrar(
diff --git a/windows/flutter/generated_plugins.cmake b/windows/flutter/generated_plugins.cmake
index 6777f7c..4258c7e 100644
--- a/windows/flutter/generated_plugins.cmake
+++ b/windows/flutter/generated_plugins.cmake
@@ -4,8 +4,10 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   flutter_inappwebview_windows
+  flutter_libserialport
   flutter_nesigner_sdk
   flutter_secure_storage_windows
+  isar_flutter_libs
   nesigner_adapter
   screen_retriever_windows
   window_manager