diff --git a/build/systemMenu_tools/HWInfoWriter/ARM9/src/HWInfoWriter.c b/build/systemMenu_tools/HWInfoWriter/ARM9/src/HWInfoWriter.c
index 3cb0895b..a6dbafec 100644
--- a/build/systemMenu_tools/HWInfoWriter/ARM9/src/HWInfoWriter.c
+++ b/build/systemMenu_tools/HWInfoWriter/ARM9/src/HWInfoWriter.c
@@ -128,11 +128,11 @@ void HWInfoWriterInit( void )
 	}
 	
 	// 無線強制ON/OFF情報の表示
-	s_isDisableWireless = LCFG_THW_IsForceDisableWireless();
+	s_isDisableWireless = OS_IsForceDisableWireless();
 	PrintfSJIS( 3 * 8, 2 * 8, TXT_COLOR_BLACK, pWireless[ s_isDisableWireless ] );
 	
-	OS_TPrintf( "region = %d\n", LCFG_THW_GetRegion() );
-	PrintfSJISSub( 2 * 8, 16 * 8, TXT_COLOR_BLACK, "Region   = %s", strRegion[ LCFG_THW_GetRegion() ] );
+	OS_TPrintf( "region = %d\n", OS_GetRegion() );
+	PrintfSJISSub( 2 * 8, 16 * 8, TXT_COLOR_BLACK, "Region   = %s", strRegion[ OS_GetRegion() ] );
 	PrintfSJISSub( 2 * 8, 18 * 8, TXT_COLOR_BLACK, "SerialNo = %s", LCFG_THW_GetSerialNoPtr() );
 	if ( 1 )
 	{
@@ -143,7 +143,7 @@ void HWInfoWriterInit( void )
 		for( i = 0; i < 4; i++ ) gameCode[ i ] = titleID_Lo[ 4 - i - 1 ];
 		PrintfSJISSub( 2 * 8, 20 * 8, TXT_COLOR_BLACK, "LauncherTitleID_Lo = %s", gameCode );
 	}
-	s_region_old = LCFG_THW_GetRegion();
+	s_region_old = OS_GetRegion();
 	s_csr = 0;
 	DrawMenu( s_csr, &s_writerParam );
 	
diff --git a/build/systemMenu_tools/HWInfoWriter/ARM9/src/hwi.c b/build/systemMenu_tools/HWInfoWriter/ARM9/src/hwi.c
index 19d85897..fd24bbd5 100644
--- a/build/systemMenu_tools/HWInfoWriter/ARM9/src/hwi.c
+++ b/build/systemMenu_tools/HWInfoWriter/ARM9/src/hwi.c
@@ -384,7 +384,7 @@ BOOL HWI_WriteHWNormalInfoFile( void )
 		u8 serialNo[ LCFG_TWL_HWINFO_MOVABLE_UNIQUE_ID_LEN ];
 		
 		MI_CpuClear8( serialNo, LCFG_TWL_HWINFO_MOVABLE_UNIQUE_ID_LEN );
-		LCFG_THW_GetSerialNo( serialNo );
+		OS_GetSerialNo( serialNo );
 		
 		for( i = 0; i < LCFG_TWL_HWINFO_MOVABLE_UNIQUE_ID_LEN; i++ ) {
 			Info.movableUniqueID[ i ] = (u8)( serialNo[ i ] ^ s_serialNo_mask[ i ] );
@@ -432,7 +432,7 @@ BOOL HWI_WriteHWSecureInfoFile( u8 region, const u8 *pSerialNo, BOOL isDisableWi
     LCFG_THW_SetFlagForceDisableWireless( isDisableWireless );
 
 	// 旧リージョンを保存
-	old_region = LCFG_THW_GetRegion();
+	old_region = OS_GetRegion();
 
     // リージョンのセット
     LCFG_THW_SetRegion( region );
@@ -463,7 +463,7 @@ BOOL HWI_WriteHWSecureInfoFile( u8 region, const u8 *pSerialNo, BOOL isDisableWi
 		}
 
 		// 現在のシリアルNo取得
-		LCFG_THW_GetSerialNo( serialNoOld );
+		OS_GetSerialNo( serialNoOld );
 
 		// 新しいシリアルNoをクリアしておく
 		MI_CpuClear8( serialNoNew, sizeof(serialNoNew) );