diff --git a/patch_v2/files_app/files b/patch_v2/files_app/files
index 45a0dda..1eaac88 100755
Binary files a/patch_v2/files_app/files and b/patch_v2/files_app/files differ
diff --git a/patch_v2/hello_app/hello b/patch_v2/hello_app/hello
index e1d3f97..92fec1d 100755
Binary files a/patch_v2/hello_app/hello and b/patch_v2/hello_app/hello differ
diff --git a/patch_v2/ncm_app/ncm b/patch_v2/ncm_app/ncm
index 1db9398..1daaae0 100755
Binary files a/patch_v2/ncm_app/ncm and b/patch_v2/ncm_app/ncm differ
diff --git a/patch_v2/sdk/meow_ui_input.c b/patch_v2/sdk/meow_ui_input.c
index eb5c0dc..11dac2d 100644
--- a/patch_v2/sdk/meow_ui_input.c
+++ b/patch_v2/sdk/meow_ui_input.c
@@ -109,6 +109,33 @@ static const char *meow_settings_path(void)
     return (e && e[0]) ? e : "/usr/data/meow/settings.conf";
 }
 
+/* ---- 插孔消抖（M2.92，与 launcher/watchdog 255 同款）----
+ * 插拔 3.5/4.4 耳机的电气瞬态会在音量键 ADC（event2）上产生幽灵 VOL_UP/DOWN 按下
+ * （真机实证：插 4.4 同帧 ramp 爬满上限）。插孔状态变化后 800ms 内忽略音量键边沿。
+ * 节流：500ms 才真读 /sys 一次（不在热路径每圈读文件）。 */
+static int  g_jack_combo = -1;                 /* hs*2+bal 缓存，-1=未读 */
+static unsigned long long g_jack_changed_at = 0, g_jack_polled_at = 0;
+
+static int meow_input_jack_debounce(void)
+{
+    unsigned long long now = meow_ui_time_ms();
+    if (now - g_jack_polled_at >= 500) {
+        g_jack_polled_at = now;
+        int hs = -1, bal = -1;
+        char b[8];
+        int fd = open("/sys/class/switch/headset/state", O_RDONLY);
+        if (fd >= 0) { ssize_t n = read(fd, b, sizeof b - 1); close(fd); if (n > 0) { b[n] = 0; hs = atoi(b); } }
+        fd = open("/sys/class/switch/balance/state", O_RDONLY);
+        if (fd >= 0) { ssize_t n = read(fd, b, sizeof b - 1); close(fd); if (n > 0) { b[n] = 0; bal = atoi(b); } }
+        if (hs >= 0 && bal >= 0) {
+            int combo = hs * 2 + bal;
+            if (g_jack_combo >= 0 && combo != g_jack_combo) g_jack_changed_at = now;
+            g_jack_combo = combo;
+        }
+    }
+    return g_jack_changed_at && (now - g_jack_changed_at) < 800;
+}
+
 /* ---- 系统按键语义（M2.55：SDK 输入层消化，App 前台也生效）----
  * 物理键是系统资源（APPS.md §3.4.1），语义全局统一。本函数在输入线程执行系统动作：
  *   电源 116        → 息屏/亮屏/长按菜单（内核/sys_server/watchdog），SDK 不动（维持现状）；
@@ -124,7 +151,7 @@ static void meow_input_handle_sys_key(int code, int val)
             break;
         case MEOW_KEY_VOLUMEDOWN:
         case MEOW_KEY_VOLUMEUP:
-            if (val == 1) {
+            if (val == 1 && !meow_input_jack_debounce()) {   /* 插孔瞬态期忽略幽灵音量边沿 */
                 int dir = (code == MEOW_KEY_VOLUMEUP) ? +1 : -1;
                 int nv = meow_ui_vol_step(meow_settings_path(), dir);   /* settings 语义+持久化 */
                 meow_ui_vol_dac_write(nv);                              /* 写真实 CS43198 DAC */
diff --git a/patch_v2/sdk/test_sdk_input_keys b/patch_v2/sdk/test_sdk_input_keys
index 15f72da..174a543 100755
Binary files a/patch_v2/sdk/test_sdk_input_keys and b/patch_v2/sdk/test_sdk_input_keys differ