diff --git a/trunk/ConsoleDataMigration/ConsoleBackup/Exporter.cpp b/trunk/ConsoleDataMigration/ConsoleBackup/Exporter.cpp
index 4afdadd..e7e2cb7 100644
--- a/trunk/ConsoleDataMigration/ConsoleBackup/Exporter.cpp
+++ b/trunk/ConsoleDataMigration/ConsoleBackup/Exporter.cpp
@@ -56,9 +56,6 @@ nn::os::StackBuffer<EXPORT_THREAD_STACK_SIZE>    s_ExportThreadStack;
 
 wchar_t s_RootName[256];
 
-// TODO: Thread.IsAlive に置き換える
-bool s_IsExportThreadFinished = false;
-
 }
 
 void DeleteTrash()
@@ -344,7 +341,6 @@ void ExportThreadFunc()
 {
     nn::Result result;
 
-    s_IsExportThreadFinished = false;
     result = nn::fs::MountSpecialArchive(common::NAND_ARCHIVE_NAME, nn::fs::CTR::ARCHIVE_TYPE_CTR_NAND);
     if(result.IsFailure())
     {
@@ -372,7 +368,6 @@ void ExportThreadFunc()
     nn::fs::Unmount(common::NAND_ARCHIVE_NAME);
 
     NN_LOG("Export Thread Finalize\n");
-    s_IsExportThreadFinished = true;
 }
 
 nn::Result WriteSaveData()
@@ -421,6 +416,7 @@ nn::Result WriteSaveData()
 void FinalizeExportThread()
 {
     s_ExportThread.Join();
+    s_ExportThread.Finalize();
 }
 
 void ExportData()
@@ -467,7 +463,7 @@ u32 GetProgress()
 
 bool IsExportFinished()
 {
-    return s_IsExportThreadFinished;
+    return !s_ExportThread.IsAlive();
 }
 
 }
diff --git a/trunk/ConsoleDataMigration/ConsoleRestore/Importer.cpp b/trunk/ConsoleDataMigration/ConsoleRestore/Importer.cpp
index a5cca1f..0d109f5 100644
--- a/trunk/ConsoleDataMigration/ConsoleRestore/Importer.cpp
+++ b/trunk/ConsoleDataMigration/ConsoleRestore/Importer.cpp
@@ -54,7 +54,6 @@ const size_t IMPORT_THREAD_STACK_SIZE = 0x4000;
 nn::os::Thread                                  s_ImportThread;
 nn::os::StackBuffer<IMPORT_THREAD_STACK_SIZE>    s_ImportThreadStack;
 
-bool s_IsImportThreadFinished = false;
 const size_t TIME_ZONE_LENGTH = 9; // "+23:45"
 char s_TimeZoneStr[TIME_ZONE_LENGTH];
 
@@ -584,7 +583,6 @@ void ImportThreadFunc()
 {
     nn::Result result;
 
-    s_IsImportThreadFinished = false;
     result = nn::fs::MountSpecialArchive(common::NAND_ARCHIVE_NAME, nn::fs::CTR::ARCHIVE_TYPE_CTR_NAND);
     if(result.IsFailure())
     {
@@ -616,8 +614,6 @@ void ImportThreadFunc()
     nn::fs::Unmount(common::NAND_ARCHIVE_NAME);
 
     NN_LOG("Import Thread Finalize\n");
-    s_IsImportThreadFinished = true;
-
 }
 
 namespace
@@ -734,7 +730,7 @@ void DeleteConsoleInitializedFile()
 
 bool IsImportFinished()
 {
-    return s_IsImportThreadFinished;
+    return !s_ImportThread.IsAlive();
 }
 
 void CreateWriteFinishedFile()
diff --git a/trunk/ConsoleDataMigration/ConsoleRestore/NtpClient.cpp b/trunk/ConsoleDataMigration/ConsoleRestore/NtpClient.cpp
index 14662d2..53fca15 100644
--- a/trunk/ConsoleDataMigration/ConsoleRestore/NtpClient.cpp
+++ b/trunk/ConsoleDataMigration/ConsoleRestore/NtpClient.cpp
@@ -33,7 +33,6 @@ namespace {
 const size_t NTP_THREAD_STACK_SIZE = 0x1000;
 nn::os::Thread                                  s_NtpThread;
 nn::os::StackBuffer<NTP_THREAD_STACK_SIZE>    s_NtpThreadStack;
-bool s_IsNtpThreadFinish = false;
 bool s_NtpSyncSuccessed = false;
 
 
@@ -339,13 +338,11 @@ void NtpThreadFunc()
 
     // インターネット設定を元に戻す
     RestoreCurrentInternetSetting();
-
-    s_IsNtpThreadFinish = true;
 }
 
 bool IsTimeAdjustFinished()
 {
-    return s_IsNtpThreadFinish;
+    return !s_NtpThread.IsAlive();
 }
 
 bool IsTimeAdjustSuccessed()
@@ -360,6 +357,11 @@ void AdjustTime()
     result = nn::ac::CTR::InitializeInternal();
     COMMON_LOGGER_RESULT_IF_FAILED(result);
 
+    if(IsTimeAdjustFinished())
+    {
+        s_NtpThread.Join();
+        s_NtpThread.Finalize();
+    }
     s_NtpThread.Start( NtpThreadFunc, s_NtpThreadStack);
 }
 
diff --git a/trunk/ConsoleDataMigration/ConsoleRestore/Updater.cpp b/trunk/ConsoleDataMigration/ConsoleRestore/Updater.cpp
index fdf49f3..34955f2 100644
--- a/trunk/ConsoleDataMigration/ConsoleRestore/Updater.cpp
+++ b/trunk/ConsoleDataMigration/ConsoleRestore/Updater.cpp
@@ -50,8 +50,6 @@ namespace
 
 nn::Result s_Result = nn::ResultSuccess();
 
-bool s_updateFinished = false;
-
 const size_t UPDATER_THREAD_STACK_SIZE = 0x1000;
 nn::os::Thread                                  s_UpdaterThread;
 nn::os::StackBuffer<UPDATER_THREAD_STACK_SIZE>    s_UpdaterThreadStack;
@@ -214,32 +212,25 @@ void UpdateThreadFunc()
 
     NN_LOG("[Updater] Finish nim Updater demo.\n");
 
-    s_updateFinished = true;
-
 }
 
 void StartFGNetworkUpdate()
 {
     NN_LOG("Start FGNetworkUpdate\n");
-    s_updateFinished = false;
     s_Result = nn::ResultSuccess();
     s_UpdaterThread.Start(UpdateThreadFunc, s_UpdaterThreadStack);
 }
 
-bool IsUpdaterThreadStateValid()
-{
-    return s_UpdaterThread.IsValid();
-}
-
 void FinishFGNetworkUpdate()
 {
     NN_LOG("Finalize FGNetworkUpdate\n");
     s_UpdaterThread.Join();
+    s_UpdaterThread.Finalize();
 }
 
 bool IsNetworkUpdateFinished()
 {
-    return s_updateFinished;
+    return !s_UpdaterThread.IsAlive();
 }
 
 u32 GetUpdateProgress()