diff --git a/sw_usb_audio/app_usb_aud_fosi_c1_v71/src/extensions/audiohw.xc b/sw_usb_audio/app_usb_aud_fosi_c1_v71/src/extensions/audiohw.xc
index 4aeb6e0..64be47b 100644
--- a/sw_usb_audio/app_usb_aud_fosi_c1_v71/src/extensions/audiohw.xc
+++ b/sw_usb_audio/app_usb_aud_fosi_c1_v71/src/extensions/audiohw.xc
@@ -556,6 +556,23 @@ static void tx1_rgb_volume_bar_refresh(htr3236_t *dev, client interface i2c_mast
 
 void save_value(unsigned char * unsafe path, unsigned char value);
 unsigned char load_value(unsigned char * unsafe path);
+
+/* 改动原因：MIC 静音与 golden/phaten 一致——g_mute_switch 驱动定时器里 effective_adc_vol=0，
+ * 并立即写 NAU88 ADC 寄存器；old_adc_vol 与定时器分支保持同步避免重复 I2C。 */
+static void tx1_apply_mic_mute_hw(unsigned mic_muted, unsigned &old_adc_vol,
+                                  client interface i2c_master_if i2c)
+{
+    SET_SHARED_GLOBAL(g_mute_switch, mic_muted);
+    if (mic_muted) {
+        mic_volume(0, i2c);
+        old_adc_vol = 0;
+    } else {
+        unsigned adc_vol;
+        GET_SHARED_GLOBAL(adc_vol, g_adc_vol);
+        mic_volume(adc_vol, i2c);
+        old_adc_vol = adc_vol;
+    }
+}
 /* 改动原因：c_dfu 仅接收 FIRMWARE_UPGRADE_START，在此线程执行 handle_firmware_upgrade_start。
  * 移除未使用的 chanend c_erase：原占位参数无任何 select/通信，会导致 main 侧被迫接 dummy 通道且与当前拓扑无关。 */
 #if HID_DFU_EN
@@ -590,6 +607,27 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
     tx1_feature_mode_t feature_mode = FEATURE_MODE_NONE;
     unsigned feature_volume = 12;  // 改动原因：与 jok ui_app gunshot/footstep/mic 默认 12 一致
     unsigned mic_muted = 0;
+    /* 改动原因：与 phaten golden 相同 LFS 键名，断电保存 MIC 静音；255=首次无记录默认未静音 */
+    unsigned char mic_mute_path[] = "mic_mute";
+    {
+        unsigned char saved_mic_mute = load_value(mic_mute_path);
+        if (saved_mic_mute == 1) {
+            mic_muted = 1;
+        } else {
+            mic_muted = 0;
+            if (saved_mic_mute == 255) {
+                save_value(mic_mute_path, (unsigned char)0);
+            }
+        }
+        SET_SHARED_GLOBAL(g_mute_switch, mic_muted);
+        /* 改动原因：与 g_dac_vol 相同技巧，首轮定时器必写 ADC；若已静音则 effective_adc_vol=0 */
+        {
+            unsigned init_adc_vol;
+            GET_SHARED_GLOBAL(init_adc_vol, g_adc_vol);
+            old_adc_vol = mic_muted ? (~init_adc_vol) : (~0u);
+        }
+        debug_printf("TX1: Loaded mic_mute from flash: mic_muted=%d\n", mic_muted);
+    }
     unsigned dnr_enabled = 1;
     unsigned high_perf_mode = 0;
 
@@ -1308,10 +1346,13 @@ void AudioHwRemote2(streaming chanend c, client interface i2c_master_if i2c, cli
                                 mic_long_fired = 0;
                             } else {
                                 if (!mic_long_fired && (now - mic_press_time) < 1000000000ull) {
-                                    // Short press: toggle mic mute
+                                    /* 改动原因：短按 MIC 切换静音——mute ADC（mic_volume(0)）、
+                                     * g_mute_switch 供 HID 0xB2，save_value 断电记忆，开机 load_value 恢复 */
                                     mic_muted = !mic_muted;
+                                    tx1_apply_mic_mute_hw(mic_muted, old_adc_vol, i2c);
+                                    save_value(mic_mute_path, (unsigned char)mic_muted);
                                     gpio_leds_dirty = 1;
-                                    debug_printf("TX1: MIC short press - mic_muted=%d\n", mic_muted);
+                                    debug_printf("TX1: MIC short press - mic_muted=%d saved\n", mic_muted);
                                 }
                             }
                             prev_mic = mic;