diff --git a/libn3ds/include/arm11/drivers/codec.h b/libn3ds/include/arm11/drivers/codec.h
index 8421d39..172a0e8 100644
--- a/libn3ds/include/arm11/drivers/codec.h
+++ b/libn3ds/include/arm11/drivers/codec.h
@@ -54,3 +54,10 @@ void CODEC_wakeup(void);
  * @return     Returns true if data was available and false otherwise.
  */
 bool CODEC_getRawAdcData(CdcAdcData *data);
+
+/**
+ * @brief      Get the headphone connect state
+ * 
+ * @return     Returns true if headphone is connected
+ */
+u8 CODEC_isHeadsetUsing(void);
\ No newline at end of file
diff --git a/libn3ds/source/arm11/drivers/codec.c b/libn3ds/source/arm11/drivers/codec.c
index f7d949c..da3911e 100644
--- a/libn3ds/source/arm11/drivers/codec.c
+++ b/libn3ds/source/arm11/drivers/codec.c
@@ -758,3 +758,8 @@ bool CODEC_getRawAdcData(CdcAdcData *data)
 
 	return false;
 }
+
+u8 CODEC_isHeadsetUsing(void)
+{
+	return readReg(CDC_REG_100_44) & 3u;
+}
\ No newline at end of file
diff --git a/source/arm11/open_agb_firm.c b/source/arm11/open_agb_firm.c
index f1719e7..74ea5ae 100644
--- a/source/arm11/open_agb_firm.c
+++ b/source/arm11/open_agb_firm.c
@@ -40,6 +40,7 @@
 #include "arm11/atp.h"
 #include "kernel.h"
 #include "kevent.h"
+#include "arm11/drivers/codec.h"
 
 
 #define OAF_WORK_DIR    "sdmc:/3ds/open_agb_firm"
@@ -167,6 +168,7 @@ static atp_error_t config_item( atp_callerdata_t, atp_counter_t index, atp_itemc
 {
 	const char *scaler_val[] = {"上屏无缩放", "上屏GPU放大", "上屏DMA放大", "下屏无缩放"};
 	const char *savetype_name[] = {"和卡带序列号一致", "读取ROM的特定标记", "汉化带SRAM补丁", "自行决定"};
+	const char *headphone_name[] = {"零", "壹", "贰", "叁"};
 	static char buf[16];
 	cfg->extra_text_color = ATP_COLOR_GREEN;
 	if( index == 0 )
@@ -192,6 +194,11 @@ static atp_error_t config_item( atp_callerdata_t, atp_counter_t index, atp_itemc
 		cfg->text = "存档方案";
 		cfg->extra_text = savetype_name[g_oafConfig.savePolicy];
 	}
+	else 
+	{
+		cfg->text = "耳机状态";
+		cfg->extra_text = headphone_name[CODEC_isHeadsetUsing()];
+	}
 	cfg->value = index;
 	return ATP_SUCCESS;
 }
@@ -255,7 +262,7 @@ atp_error_t oaf_config_page()
 		title, sizeof(title), 
 		"参数配置　　　　　　　　　　　当前电量:%3d%%"
 		"每次开机存档方案重置为“和卡带序列号一致”，这个方案会优先使用游戏最后一次启动时设置的存档类型", MCU_getBatteryLevel());
-	atp_error_t res = atp_select( title, 4, config_item, config_adjust, NULL, 0, 0, NULL );
+	atp_error_t res = atp_select( title, 5, config_item, config_adjust, NULL, 0, 0, NULL );
 	if( res == ATP_NO_ACTION )
 	{
 		memcpy( &g_oafConfig, prev, sizeof(g_oafConfig) );