diff --git a/source/arm11/filebrowser.c b/source/arm11/filebrowser.c
index 91db5a7..020a420 100644
--- a/source/arm11/filebrowser.c
+++ b/source/arm11/filebrowser.c
@@ -309,7 +309,6 @@ static atp_pageopt_t serve_on_key( atp_callerdata_t data, atp_counter_t index, a
 			return WAIT_ON_ERRPAGE( display_noserial );
 		}
 		else RECOVER_PATH;
-		fsQuickWrite("serial.txt", serial, 4);
 
 		acl_count_t len;
 		if( RES_OK != acl_open_lib( "gba.acl" ) )
@@ -328,6 +327,8 @@ static atp_pageopt_t serve_on_key( atp_callerdata_t data, atp_counter_t index, a
 			return WAIT_ON_ERRPAGE( display_nocheat );
 		}
 		
+		fsQuickWrite("serial.txt", serial, 4);
+		
 		// 显示配置页面
 		atp_error_t res;
 		atp_itemval_t item;