diff --git a/source/arm11/open_agb_firm.c b/source/arm11/open_agb_firm.c
index cfa89ab..0e27745 100644
--- a/source/arm11/open_agb_firm.c
+++ b/source/arm11/open_agb_firm.c
@@ -1001,28 +1001,28 @@ static void repairBootFirm( char *firm_path )
 {
 	if( 0 == strcmp(firm_path, autorun) )
 	{
-		char firmname[0x40];
-		memset( firmname, 0, 0x40 );
-		if( RES_OK == fsQuickRead("autorun", firmname, 0x3f) )
+		char firmname[512];		// 为啥不是0x40？因为fsLoadPathFromFile要的是512
+		if( RES_OK == fsLoadPathFromFile("autorun", firmname) )
 		{
 			fRename( autorun, firmname );
-			strncpy( firm_path, firmname, 0x40 );
+			strncpy( firm_path, firmname, 0x3f );
 		}
 		else
 		{
 			const char *default_path = "sdmc:/luma/payloads/open_agb_firm.firm";
 			fRename( autorun, default_path );
-			strncpy( firm_path, default_path, 0x40 );
+			strncpy( firm_path, default_path, 0x3f );
 		}
+		firm_path[0x3f] = '\0';
 	}
 }
 
 Result oafPreboot( const char *firm_path )
 {
-	ee_puts( firm_path );
+	// 记下来要恢复的文件名。加上\n是因为fsLoadPathFromFile靠它来识别路径结尾
+	char memo[0x50];
+	ee_snprintf(memo, 0x49, "%s\n", firm_path);
+	fsQuickWrite("autorun", memo, strlen(memo));
 
-	fsQuickWrite("autorun", firm_path, strlen(firm_path));
-	Result ret = fRename(firm_path, autorun);
-	TIMER_sleepMs(500);
-	return ret;
+	return fRename(firm_path, autorun);
 }
\ No newline at end of file