diff --git a/source/arm11/acf.c b/source/arm11/acf.c
index 9010652..770e709 100644
--- a/source/arm11/acf.c
+++ b/source/arm11/acf.c
@@ -9,6 +9,8 @@
 #include "arm11/console.h"
 #include "fs.h"
 
+extern Result fReadSize( FHandle file, void *buff, unsigned size, unsigned *readout );
+
 typedef struct
 {
     uint16_t start;
@@ -109,16 +111,13 @@ acf_error_t acf_initialize(acf_text_t acfile)
         return ACFONT_MEM_EMPTY;
     }
 
-    int fill = 0;
-    do{
-        Result res;
-        if( RES_OK != (res=fRead(font, fragments+fill, memfrag-fill < 256 ? memfrag-fill : 256, &readed)) ){
-            free( fragments );
-            fClose( font );
-            return ACFONT_INVALID;
-        }
-        fill += readed;
-    } while( fill < memfrag );    
+    if( RES_OK != fReadSize(font, fragments, memfrag, &readed) 
+        || readed != memfrag )
+    {
+        free( fragments );
+        fClose( font );
+        return ACFONT_INVALID;
+    }
 
     // save filename for `fopen`
     int len = strlen(acfile);
diff --git a/source/arm11/acl.c b/source/arm11/acl.c
index a85a0a2..1c91f2b 100644
--- a/source/arm11/acl.c
+++ b/source/arm11/acl.c
@@ -1,6 +1,8 @@
 #include "arm11/acl.h"
 #include "fs.h"
 
+extern Result fReadSize( FHandle file, void *buff, unsigned size, unsigned *readout );
+
 typedef struct
 {
     uint32_t    typeloc;
@@ -129,7 +131,7 @@ static int32_t bin_search( acl_text_t game )
     }
 
     uint32_t readed;
-    if( RES_OK != fRead(gblcht.fd, serials, size, &readed) 
+    if( RES_OK != fReadSize(gblcht.fd, serials, size, &readed) 
         || readed != size )
     {
         free( serials );
@@ -278,7 +280,7 @@ static acl_error_t init_cheatset( uint32_t offset )
     char *table = (char*)malloc( size );
     if( !table ) return ACHTLIB_NOMEM;
 
-    if( RES_OK != fRead(gblcht.fd, table, size, &readed)    // TODO: 多次read
+    if( RES_OK != fReadSize(gblcht.fd, table, size, &readed)
         || readed != size )
     {
         free( table );
@@ -308,7 +310,7 @@ static acl_error_t load_data()
         return ACHTLIB_INVALID;
     
     uint32_t readed;
-    if( RES_OK != fRead(gblcht.fd, d, total, &readed) 
+    if( RES_OK != fReadSize(gblcht.fd, d, total, &readed) 
         || readed != total )
     {
         free( d );
diff --git a/source/arm11/filebrowser.c b/source/arm11/filebrowser.c
index 2008490..40229f2 100644
--- a/source/arm11/filebrowser.c
+++ b/source/arm11/filebrowser.c
@@ -28,6 +28,7 @@
 #include "drivers/gfx.h"
 #include "arm11/acf.h"
 #include "arm11/atp.h"
+#include "arm11/acl.h"
 
 #define screenClean() memset(consoleGet()->frameBuffer, 0, CWIDTH*CHEIGHT*sizeof(uint16_t))
 
@@ -140,6 +141,31 @@ scanEnd:
 	return received > MAX_DIR_ENTRIES ? RES_OUT_OF_RANGE :  res;
 }
 
+static Result rom_get_serial( const char *file, const char serial[5] )
+{
+	FHandle f;
+	Result res;
+	u32 readed;
+	serial[0] = serial[4] = '\0';
+	if( RES_OK != (res=fOpen(&f, file, FA_OPEN_EXISTING | FA_READ)) )
+	{
+		return res;
+	}
+	if( RES_OK != (res=fLseek(f, 0xac)) )
+	{
+		fClose( f );
+		return res;
+	}
+	if( RES_OK != (res=fRead(f, serial, 4, &readed)) 
+		|| readed != 4 )
+	{
+		fClose(f);
+		return res;
+	}
+	fClose(f);
+	return RES_OK;
+}
+
 static atp_text_t folder_help[] = {
 	"操 作 说 明",
 	"~    ~    ~    ~    ~    ~    ~",
@@ -175,7 +201,10 @@ static atp_error_t display_folder( atp_callerdata_t data, atp_counter_t index, a
 												return ATP_SUCCESS; \
 											}
 
-DECLARE_ERROR_PAGE( display_nocheat, "金手指功能还在制作中……" )
+DECLARE_ERROR_PAGE( display_openlib, "打开金手指文件出错" )
+DECLARE_ERROR_PAGE( display_selcht, "查找金手指配置出错" )
+DECLARE_ERROR_PAGE( display_noserial, "提取游戏识别码失败" )
+DECLARE_ERROR_PAGE( display_nocheat, "找不到对应的金手指配置" )
 DECLARE_ERROR_PAGE( display_empty, "没有合适的文件" )
 DECLARE_ERROR_PAGE( display_toolong, "路径过长，改名或移动文件后再试" )
 DECLARE_ERROR_PAGE( display_pathfull, "游戏或目录过量，最多显示999个" )
@@ -198,25 +227,79 @@ atp_error_t help_page( atp_text_t *wording, atp_counter_t length )
 	return res;
 }
 
+atp_error_t select_region( atp_callerdata_t dummy, atp_counter_t index, atp_itemcfg_t *config )
+{
+	acl_chtid_t sid;
+	acl_region_t sreg;
+	acl_query_cheat_set(index, &sid, &sreg);
+	switch( sreg )
+	{
+		case 'J': config->text = "日文版"; break;
+		case 'E': config->text = "英文版"; break;
+		case 'F': config->text = "法语版"; break;
+		case 'S': config->text = "西班牙语"; break;
+		case 'I': config->text = "意大利语"; break;
+		case 'D': config->text = "德语版"; break;
+		default: config->text = "其他语种"; break;
+	}
+	config->value = sid;
+	return ATP_SUCCESS;
+}
+
 extern atp_error_t oaf_config_page();
 
-static atp_pageopt_t serve_on_key( atp_callerdata_t data, atp_counter_t, atp_boolean_t x, atp_boolean_t y, atp_boolean_t l, atp_boolean_t r, atp_boolean_t start, atp_boolean_t select )
+#define WAIT_ON_ACT( act ) ( ATP_POWER_OFF == (act) ) ? ATP_POWER_OFF : ATP_PAGE_REFRESH
+#define WAIT_ON_ERRPAGE( page ) WAIT_ON_ACT( atp_show(1, (page), NULL) )
+
+static atp_pageopt_t serve_on_key( atp_callerdata_t data, atp_counter_t index, atp_boolean_t x, atp_boolean_t y, atp_boolean_t l, atp_boolean_t r, atp_boolean_t start, atp_boolean_t select )
 {
 	if( start )
 	{
 		atp_tips( "", NULL );
-		return ATP_POWER_OFF == help_page( folder_help, sizeof(folder_help)/sizeof(atp_text_t) ) 
-				? ATP_POWER_OFF : ATP_PAGE_REFRESH;
+		return WAIT_ON_ACT( help_page( folder_help, sizeof(folder_help)/sizeof(atp_text_t) ) );
 	}
 	else if( select )
 	{
-		return ATP_POWER_OFF == oaf_config_page() ? ATP_POWER_OFF : ATP_PAGE_REFRESH;
+		return WAIT_ON_ACT( oaf_config_page() );
 	}
 	else if( x )
 	{
-		atp_tips( "", NULL );
-		return ATP_POWER_OFF == atp_show(1, display_nocheat, NULL)
-				? ATP_POWER_OFF : ATP_PAGE_REFRESH;
+		DirList const *dList = (DirList*)data;
+		const char *file = &dList->ptrs[index][1];
+
+		// 确定game serial
+		char serial[5];
+		if( RES_OK != rom_get_serial(file, serial) )
+		{
+			return WAIT_ON_ERRPAGE( display_noserial );
+		}
+		serial[4] = '\0';
+
+		acl_count_t len;
+		if( RES_OK != acl_open_lib( file ) )
+		{
+			return WAIT_ON_ERRPAGE( display_openlib );
+		}
+		if( RES_OK != acl_select_game( serial, 0, &len ) )
+		{
+			acl_close_lib();
+			return WAIT_ON_ERRPAGE( display_selcht );
+		}
+		if( len == 0 )
+		{
+			atp_tips( "", NULL );
+			acl_close_lib();
+			return WAIT_ON_ERRPAGE( display_nocheat );
+		}
+		
+		// 显示配置页面
+		atp_error_t res;
+		atp_itemval_t item;
+		atp_tips(NULL, "按B返回");
+		res = atp_select("选择一个金手指配置", len, select_region, NULL, NULL, 0, 0, &item );
+
+		acl_close_lib();
+		return ATP_PAGE_REFRESH;
 	}
 	return ATP_PAGE_NOOPTION;
 }
diff --git a/source/arm11/main.c b/source/arm11/main.c
index 70a4fe7..f43447a 100644
--- a/source/arm11/main.c
+++ b/source/arm11/main.c
@@ -47,6 +47,23 @@ static void setBacklight(void)
 	else GFX_setBrightness(backlight, backlight);
 }
 
+Result fReadSize( FHandle file, void *buff, unsigned size, unsigned *readout )
+{
+	unsigned fill = 0;
+	unsigned readed;
+    do{
+        Result res;
+        if( RES_OK != (res=fRead(file, buff+fill, size-fill < 256 ? size-fill : 256, &readed)) ){
+			*readout = fill;
+            return res;
+        }
+        fill += readed;
+    } while( fill < size );
+
+	*readout = fill;
+	return RES_OK;
+}
+
 int main(void)
 {
 	Result res = fMount(FS_DRIVE_SDMC);