diff --git a/source/arm11/open_agb_firm.c b/source/arm11/open_agb_firm.c
index ffaf1d1..f717ce4 100644
--- a/source/arm11/open_agb_firm.c
+++ b/source/arm11/open_agb_firm.c
@@ -131,7 +131,7 @@ static atp_error_t config_item( atp_callerdata_t data, atp_counter_t index, atp_
 		ee_snprintf(buf, sizeof(buf), "%d", g_oafConfig.backlight);
 		cfg->text = "屏幕亮度";
 		cfg->extra_text = buf;
-		if( g_oafConfig.backlight == LIGHT_MIN || g_oafConfig == LIGHT_MAX )
+		if( g_oafConfig.backlight == LIGHT_MIN || g_oafConfig.backlight == LIGHT_MAX )
 			cfg->extra_text_color = ATP_COLOR_RED;
 	}
 	else if( index == 1 )
@@ -157,7 +157,7 @@ static atp_pageopt_t config_adjust( atp_callerdata_t data, atp_counter_t index,
 {
 	if( index == 0 )
 	{
-		u8 light = g_oafConfig.brightness;
+		u8 light = g_oafConfig.backlight;
 		if( l ) 
 		{
 			light -= 10;
@@ -170,14 +170,19 @@ static atp_pageopt_t config_adjust( atp_callerdata_t data, atp_counter_t index,
 		}
 		if( light > LIGHT_MAX ) light = LIGHT_MAX;
 		else if( light < LIGHT_MIN ) light = LIGHT_MIN;
-		g_oafConfig.brightness = light;
+		g_oafConfig.backlight = light;
 	}
 	return ATP_PAGE_UPDATE;
 }
 
 void oaf_config_page()
 {
+	u8 light = g_oafConfig.backlight;
 	atp_select( "参数配置", 4, config_item, config_adjust, NULL, 0, 0, NULL );
+
+	if( light != g_oafConfig.backlight ) 
+		GFX_setBrightness(g_oafConfig.backlight, g_oafConfig.backlight);
+	
 }
 
 static u32 fixRomPadding(u32 romFileSize)