diff --git a/.DS_Store b/.DS_Store
index c44617c..4c43080 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/en/docs/dev_doc/protocols/xu316_zerocode_protocol.md b/en/docs/dev_doc/protocols/xu316_zerocode_protocol.md
index 4a4115a..ccb70fe 100644
--- a/en/docs/dev_doc/protocols/xu316_zerocode_protocol.md
+++ b/en/docs/dev_doc/protocols/xu316_zerocode_protocol.md
@@ -228,6 +228,7 @@ sequenceDiagram
     | 0x27 | Set unmute | MCU→XU316 |
     | 0x28 | Send audio format time delay | MCU→XU316 |
     | 0x29 | Report USB connection status | XU316→MCU |
+    | 0x30 | Set Mute pin inversion | MCU→XU316 |
 
 === "HID-MCU Passthrough Commands (0xEE-0xEF)"
     | Command | Command Description | Direction |
@@ -373,7 +374,7 @@ sequenceDiagram
 
     **Command Example**
     ```
-    55 AA 03 01 3C 20 B1 00 17 20 B1 00 16 50 48 41 54 45 4E 00 00 00 00 00 00 00 00 00 00 58 55 33 31 36 20 44 41 43 00 00 00 00 00 00 00 53 4E 32 34 30 30 30 31 00 00 00 00 00 00 00 00 12 34 56 78 D9
+    55 AA 03 01 3C 20 B1 00 17 20 B1 00 16 50 48 41 54 45 4E 00 00 00 00 00 00 00 00 00 00 58 55 33 31 36 20 44 41 43 00 00 00 00 00 00 00 53 4E 32 34 30 30 30 31 00 00 00 00 00 00 00 00 27 2B F6 44 51
     ```
     
     **Field Breakdown**
@@ -391,8 +392,8 @@ sequenceDiagram
     | ManufactureName | 16 bytes | `50 48 41 54 45 4E 00 00 00 00 00 00 00 00 00 00` | ASCII string `PHATEN`, padded with `00` to 16 bytes |
     | ProductName | 16 bytes | `58 55 33 31 36 20 44 41 43 00 00 00 00 00 00 00` | ASCII string `XU316 DAC`, padded with `00` to 16 bytes |
     | SerialNumber | 16 bytes | `53 4E 32 34 30 30 30 31 00 00 00 00 00 00 00 00` | ASCII string `SN240001`, padded with `00` to 16 bytes |
-    | CRC | 4 bytes | `12 34 56 78` | 32-bit CRC for product basic info (example only) |
-    | Checksum | 1 byte | `D9` | Sum of all bytes from `55` to `78`, modulo 256 |
+    | CRC | 4 bytes | `27 2B F6 44` | 32-bit CRC for product basic info (little-endian, example only) |
+    | Checksum | 1 byte | `51` | Sum of all bytes from `55` to `44`, modulo 256 |
 
 #### 3.2.3 Read Power-On Config Info (0x02)
 
@@ -437,7 +438,7 @@ sequenceDiagram
 
     **Command Example**
     ```
-    55 AA 03 02 0E 01 00 00 00 00 01 2C 20 30 30 11 22 33 44 6A
+    55 AA 03 02 0E 01 00 00 00 00 01 2C 20 30 30 C1 7A 1E 1A 33
     ```
     
     **Field Breakdown**
@@ -453,8 +454,8 @@ sequenceDiagram
     | Microphone default volume | 1 byte | `20` | Example default microphone volume |
     | DAC left channel default volume | 1 byte | `30` | Example default left channel volume |
     | DAC right channel default volume | 1 byte | `30` | Example default right channel volume |
-    | CRC | 4 bytes | `11 22 33 44` | 32-bit CRC for power-on config (example only) |
-    | Checksum | 1 byte | `6A` | Sum of all bytes from `55` to `44`, modulo 256 |
+    | CRC | 4 bytes | `C1 7A 1E 1A` | 32-bit CRC for power-on config (little-endian, example only) |
+    | Checksum | 1 byte | `33` | Sum of all bytes from `55` to `1A`, modulo 256 |
 
 #### 3.2.4 Get Current Input/Output Mode (0x03)
 
@@ -534,7 +535,7 @@ sequenceDiagram
 
     **Command Example**
     ```
-    55 AA 03 04 0E 02 00 00 00 00 00 C8 18 28 28 55 66 77 88 00
+    55 AA 03 04 0E 02 00 00 00 00 00 C8 18 28 28 3A 8A 5B 2E 93
     ```
     
     **Field Breakdown**
@@ -550,8 +551,8 @@ sequenceDiagram
     | Microphone volume | 1 byte | `18` | Example current microphone volume |
     | DAC left channel volume | 1 byte | `28` | Example current left channel volume |
     | DAC right channel volume | 1 byte | `28` | Example current right channel volume |
-    | CRC | 4 bytes | `55 66 77 88` | 32-bit CRC for user configuration (example only) |
-    | Checksum | 1 byte | `00` | Sum of all bytes from `55` to `88`, modulo 256 |
+    | CRC | 4 bytes | `3A 8A 5B 2E` | 32-bit CRC for user configuration (little-endian, example only) |
+    | Checksum | 1 byte | `93` | Sum of all bytes from `55` to `2E`, modulo 256 |
 
 #### 3.2.6 Startup Complete Command (0x05)
 
@@ -698,6 +699,24 @@ sequenceDiagram
     | 0x06 | Rewind | Rewind in current track |
     | 0x07 | Mute | Toggle system mute state |
 
+=== "MCU Sends Example"
+
+    **Command Example**
+    ```
+    55 AA 03 21 01 02 26
+    ```
+    
+    **Field Breakdown**
+    
+    | Byte Segment | Length | Example | Description |
+    |:-------|:-----|:-------|:-----|
+    | Frame Header | 2 bytes | `55 AA` | Fixed frame header indicating start of a protocol frame |
+    | Version | 1 byte | `03` | Indicates this frame is a command sent by MCU to XU316 |
+    | Command | 1 byte | `21` | Current command is “Media Control” |
+    | Data Length | 1 byte | `01` | One data byte follows |
+    | Control code | 1 byte | `02` | Indicates “Play/Pause” |
+    | Checksum | 1 byte | `26` | Sum of all bytes from `55` to control code, modulo 256 |
+
 #### 3.3.3 Report Playback Audio Stream Format and Type (0x22)
 
 === "Command Format"
@@ -771,13 +790,31 @@ sequenceDiagram
     - Typically triggered by user operation, such as pressing mode selection button
     - XU316 may need to restart to load new mode firmware
 
+=== "MCU Sends Example"
+
+    **Command Example**
+    ```
+    55 AA 03 23 05 02 00 00 00 00 2C
+    ```
+    
+    **Field Breakdown**
+    
+    | Byte Segment | Length | Example | Description |
+    |:-------|:-----|:-------|:-----|
+    | Frame Header | 2 bytes | `55 AA` | Fixed frame header indicating start of a protocol frame |
+    | Version | 1 byte | `03` | Indicates this frame is a command sent by MCU to XU316 |
+    | Command | 1 byte | `23` | Current command is “Set Input/Output Mode” |
+    | Data Length | 1 byte | `05` | 5 mode bytes follow |
+    | Input/output mode | 5 bytes | `02 00 00 00 00` | Example target mode data; definitions depend on product specification |
+    | Checksum | 1 byte | `2C` | Sum of all bytes from `55` to the last mode byte, modulo 256 |
+
 #### 3.3.5 Send Playback Volume (0x24)
 
 === "Command Format"
-    **XU316 Returns**
+    **XU316 Sends**
     ```
     Frame Header:  2 bytes - 0x55aa
-    Version:       1 byte  - 0x03
+    Version:       1 byte  - 0x00
     Command:       1 byte  - 0x24
     Data Length:   1 byte  - 0x02 (2 bytes)
     Data:          2 bytes
@@ -786,10 +823,10 @@ sequenceDiagram
     Checksum:      1 byte  - Sum of all bytes from frame header, modulo 256
     ```
 
-    **MCU Sends**
+    **MCU Returns**
     ```
     Frame Header:  2 bytes - 0x55aa
-    Version:       1 byte  - 0x00
+    Version:       1 byte  - 0x03
     Command:       1 byte  - 0x24
     Data Length:   1 byte  - 0x00
     Data:          0 bytes
@@ -820,20 +857,20 @@ sequenceDiagram
 #### 3.3.6 Send Recording Volume (0x25)
 
 === "Command Format"
-    **MCU Sends**
+    **XU316 Sends**
     ```
     Frame Header:  2 bytes - 0x55aa
-    Version:       1 byte  - 0x03
+    Version:       1 byte  - 0x00
     Command:       1 byte  - 0x25
     Data Length:   1 byte  - 0x01 (1 byte)
     Data:          1 byte  - 0xFF Mute, 0-0dB -127: -127dB
     Checksum:      1 byte  - Sum of all bytes from frame header, modulo 256
     ```
 
-    **XU316 Returns**
+    **MCU Returns**
     ```
     Frame Header:  2 bytes - 0x55aa
-    Version:       1 byte  - 0x00
+    Version:       1 byte  - 0x03
     Command:       1 byte  - 0x25
     Data Length:   1 byte  - 0x00
     Data:          0 bytes
@@ -988,7 +1025,64 @@ sequenceDiagram
     | Data Length | 1 byte | `00` | Pure acknowledgment frame with no data |
     | Checksum | 1 byte | `2B` | Sum of all bytes from `55` to `00`, modulo 256 |
 
-#### 3.3.11 Get Firmware Version Command (0xF1)
+#### 3.3.11 Set Mute Pin Inversion (0x30)
+
+=== "Command Format"
+    **MCU Sends**
+    ```
+    Frame Header:  2 bytes - 0x55aa
+    Version:       1 byte  - 0x03
+    Command:       1 byte  - 0x30
+    Data Length:   1 byte  - 0x01
+    Data:          1 byte
+                  B0: Inversion flag
+                      0x00 = Normal logic (High level unmute, Low level mute)
+                      0x01 = Inverted logic (Low level unmute, High level mute)
+    Checksum:      1 byte  - Sum of all bytes from frame header, modulo 256
+    ```
+
+    **XU316 Returns**
+    ```
+    Frame Header:  2 bytes - 0x55aa
+    Version:       1 byte  - 0x00
+    Command:       1 byte  - 0x30
+    Data Length:   1 byte  - 0x01
+    Data:          1 byte
+                  B0: Current inversion flag status
+                      0x00 = Normal logic
+                      0x01 = Inverted logic
+    Checksum:      1 byte  - Sum of all bytes from frame header, modulo 256
+    ```
+
+=== "Function Description"
+    1. This command is used to set inversion logic for the Mute pin output
+    2. Use this command when certain hardware designs have opposite Mute polarity from default
+    3. The configuration is automatically saved to Flash and persists after power-off
+    4. Takes effect immediately and returns current status
+
+=== "Use Cases"
+    - Mute pin polarity is opposite to default in hardware design
+    - Need to adapt different hardware revisions of devices
+
+=== "MCU Example"
+
+    **Command Example**
+    ```
+    55 AA 03 30 01 01 34
+    ```
+
+    **Field Breakdown**
+
+    | Byte Segment | Length | Example | Description |
+    |:-------|:-----|:-------|:-----|
+    | Frame Header | 2 bytes | `55 AA` | Fixed frame header |
+    | Version | 1 byte | `03` | Sent by MCU to XU316 |
+    | Command | 1 byte | `30` | Set Mute pin inversion |
+    | Data Length | 1 byte | `01` | 1 data byte follows |
+    | Inversion flag | 1 byte | `01` | 0x01 = inverted logic |
+    | Checksum | 1 byte | `34` | Sum of all bytes from `55` to inversion flag, modulo 256 |
+
+#### 3.3.12 Get Firmware Version Command (0xF1)
 
 === "Command Format"
     **MCU Sends**
@@ -1007,13 +1101,31 @@ sequenceDiagram
     Version:       1 byte  - 0x00
     Command:       1 byte  - 0xF1
     Data Length:   1 byte  - 0
-    Data:          0 bytes
+    Data:          3 bytes
     Checksum:      1 byte  - Sum of all bytes from frame header, modulo 256
     ```
 
 === "Function Description"
     - Get firmware version
 
+=== "MCU Sends Example"
+
+    **Command Example**
+    ```
+    55 AA 03 F1 02 00 00 F5
+    ```
+    
+    **Field Breakdown**
+    
+    | Byte Segment | Length | Example | Description |
+    |:-------|:-----|:-------|:-----|
+    | Frame Header | 2 bytes | `55 AA` | Fixed frame header indicating start of a protocol frame |
+    | Version | 1 byte | `03` | Indicates this frame is a command sent by MCU to XU316 |
+    | Command | 1 byte | `F1` | Current command is “Get Firmware Version Command” |
+    | Data Length | 1 byte | `02` | Two data bytes follow |
+    | Data | 2 bytes | `00 00` | Reserved bytes, set to `00` as placeholder in this example |
+    | Checksum | 1 byte | `F5` | Sum of all bytes from `55` to the last data byte, modulo 256 |
+
 
 ### 3.4 DAC Configuration Selection (0xF0)
 
@@ -1045,6 +1157,25 @@ sequenceDiagram
     - Test command for MCU to set DAC configuration selection in XU316. Let XU316 configure DAC via DAC I2C or MCU configure DAC itself
     - This command is product-specific and not supported by all products. Please refer to product specification for support details.
 
+=== "MCU Sends Example"
+
+    **Command Example**
+    ```
+    55 AA 03 F0 04 00 00 00 00 F6
+    ```
+    
+    **Field Breakdown**
+    
+    | Byte Segment | Length | Example | Description |
+    |:-------|:-----|:-------|:-----|
+    | Frame Header | 2 bytes | `55 AA` | Fixed frame header indicating start of a protocol frame |
+    | Version | 1 byte | `03` | Indicates this frame is a command sent by MCU to XU316 |
+    | Command | 1 byte | `F0` | Current command is “DAC Configuration Selection Command” |
+    | Data Length | 1 byte | `04` | 4 data bytes follow |
+    | Byte 0 | 1 byte | `00` | Enable XU316 to configure DAC via I2C |
+    | Byte 1-3 | 3 bytes | `00 00 00` | Reserved bytes, all set to `00` in this example |
+    | Checksum | 1 byte | `F6` | Sum of all bytes from `55` to the last data byte, modulo 256 |
+
 ### 3.5 HID and MCU Data Passthrough Commands via XU316
 
 #### 3.5.1 HID Passthrough Data to MCU via XU316 (0xEE)
diff --git a/zh/docs/dev_doc/protocols/xu316_zerocode_protocol.md b/zh/docs/dev_doc/protocols/xu316_zerocode_protocol.md
index eba2a81..8c6e2f9 100755
--- a/zh/docs/dev_doc/protocols/xu316_zerocode_protocol.md
+++ b/zh/docs/dev_doc/protocols/xu316_zerocode_protocol.md
@@ -228,6 +228,7 @@ sequenceDiagram
     | 0x27 | 设置 unmute | MCU→XU316 |
     | 0x28 | 发送音频格式的时间延迟 | MCU→XU316 |
 	| 0x29 | 报告USB连接状态 | XU316→MCU |
+	| 0x30 | 设置Mute引脚反转 | MCU→XU316 |
 
 === "HID-MCU互相透传命令(0xEE-0xEF)"
     | 命令字 | 命令描述 | 发送方向 |
@@ -373,7 +374,7 @@ sequenceDiagram
 
     **命令示例**
     ```
-    55 AA 03 01 3C 20 B1 00 17 20 B1 00 16 50 48 41 54 45 4E 00 00 00 00 00 00 00 00 00 00 58 55 33 31 36 20 44 41 43 00 00 00 00 00 00 00 53 4E 32 34 30 30 30 31 00 00 00 00 00 00 00 00 12 34 56 78 D9
+    55 AA 03 01 3C 20 B1 00 17 20 B1 00 16 50 48 41 54 45 4E 00 00 00 00 00 00 00 00 00 00 58 55 33 31 36 20 44 41 43 00 00 00 00 00 00 00 53 4E 32 34 30 30 30 31 00 00 00 00 00 00 00 00 27 2B F6 44 51
     ```
     
     **逐段解析**
@@ -391,8 +392,8 @@ sequenceDiagram
     | ManufactureName | 16字节 | `50 48 41 54 45 4E 00 00 00 00 00 00 00 00 00 00` | ASCII 字符串 `PHATEN`，后面不足 16 字节的部分用 `00` 补齐 |
     | ProductName | 16字节 | `58 55 33 31 36 20 44 41 43 00 00 00 00 00 00 00` | ASCII 字符串 `XU316 DAC`，后面用 `00` 补齐到 16 字节 |
     | SerialNumber | 16字节 | `53 4E 32 34 30 30 30 31 00 00 00 00 00 00 00 00` | ASCII 字符串 `SN240001`，后面用 `00` 补齐到 16 字节 |
-    | CRC | 4字节 | `12 34 56 78` | 产品基础信息的 32 位 CRC 校验值，这里仅作为示例演示 |
-    | 校验和 | 1字节 | `D9` | 从 `55` 开始到 `78` 结束，所有字节相加后对 256 取余的结果 |
+    | CRC | 4字节 | `27 2B F6 44` | 产品基础信息的 32 位 CRC 校验值（小端序），这里仅作为示例演示  |
+    | 校验和 | 1字节 | `51` | 从 `55` 开始到 `44` 结束，所有字节相加后对 256 取余的结果 |
 
 #### 3.2.3 读取上电配置信息（0x02）
 
@@ -437,7 +438,7 @@ sequenceDiagram
 
     **命令示例**
     ```
-    55 AA 03 02 0E 01 00 00 00 00 01 2C 20 30 30 11 22 33 44 6A
+    55 AA 03 02 0E 01 00 00 00 00 01 2C 20 30 30 C1 7A 1E 1A 33
     ```
     
     **逐段解析**
@@ -453,8 +454,8 @@ sequenceDiagram
     | 麦克风默认音量 | 1字节 | `20` | 示例默认麦克风音量 |
     | DAC左声道默认音量 | 1字节 | `30` | 示例默认左声道音量 |
     | DAC右声道默认音量 | 1字节 | `30` | 示例默认右声道音量 |
-    | CRC | 4字节 | `11 22 33 44` | 上电配置的 32 位 CRC 校验值，这里仅作为示例演示 |
-    | 校验和 | 1字节 | `6A` | 从 `55` 开始到 `44` 结束，所有字节相加后对 256 取余的结果 |
+    | CRC | 4字节 | `C1 7A 1E 1A` | 上电配置的 32 位 CRC 校验值（小端序），这里仅作为示例演示  |
+    | 校验和 | 1字节 | `33` | 从 `55` 开始到 `1A` 结束，所有字节相加后对 256 取余的结果 |
 
 #### 3.2.4 获取当前输入输出模式（0x03）
 
@@ -534,7 +535,7 @@ sequenceDiagram
 
     **命令示例**
     ```
-    55 AA 03 04 0E 02 00 00 00 00 00 C8 18 28 28 55 66 77 88 00
+    55 AA 03 04 0E 02 00 00 00 00 00 C8 18 28 28 3A 8A 5B 2E 93
     ```
     
     **逐段解析**
@@ -550,8 +551,8 @@ sequenceDiagram
     | 麦克风音量 | 1字节 | `18` | 示例当前麦克风音量 |
     | DAC左声道音量 | 1字节 | `28` | 示例当前左声道音量 |
     | DAC右声道音量 | 1字节 | `28` | 示例当前右声道音量 |
-    | CRC | 4字节 | `55 66 77 88` | 用户配置的 32 位 CRC 校验值，这里仅作为示例演示 |
-    | 校验和 | 1字节 | `00` | 从 `55` 开始到 `88` 结束，所有字节相加后对 256 取余的结果 |
+    | CRC | 4字节 | `3A 8A 5B 2E` | 用户配置的 32 位 CRC 校验值（小端序），这里仅作为示例演示 |
+    | 校验和 | 1字节 | `93` | 从 `55` 开始到 `2E` 结束，所有字节相加后对 256 取余的结果 |
 
 #### 3.2.6 启动完成命令（0x05）
 
@@ -700,6 +701,7 @@ sequenceDiagram
 
 === "MCU发送示例"
 
+    **命令示例**
     ```
     55 AA 03 21 01 02 26
     ```
@@ -790,6 +792,7 @@ sequenceDiagram
 
 === "MCU发送示例"
 
+    **命令示例**
     ```
     55 AA 03 23 05 02 00 00 00 00 2C
     ```
@@ -925,6 +928,7 @@ sequenceDiagram
 
 === "MCU发送示例"
 
+    **命令示例**
     ```
     55 AA 03 26 01 01 2A
     ```
@@ -1039,7 +1043,64 @@ sequenceDiagram
     | 数据长度 | 1字节 | `00` | 表示这是一条纯确认帧，不携带额外数据 |
     | 校验和 | 1字节 | `2B` | 从 `55` 开始到 `00` 结束，所有字节相加后对 256 取余的结果 |
 
-#### 3.3.11 获取固件版本命令（0xF1）
+#### 3.3.11 设置Mute引脚反转（0x30）
+
+=== "命令格式"
+    **MCU发送**
+    ```
+    帧头:    2字节 - 0x55aa
+    版本:    1字节 - 0x03
+    命令字:   1字节 - 0x30
+    数据长度: 1字节 - 0x01
+    数据:    1字节
+              B0: 反转标志
+                  0x00 = 正常逻辑（高电平解除静音，低电平静音）
+                  0x01 = 反转逻辑（低电平解除静音，高电平静音）
+    校验和:   1字节 - 从帧头开始按字节求和，结果对256求余
+    ```
+
+    **XU316返回**
+    ```
+    帧头:    2字节 - 0x55aa
+    版本:    1字节 - 0x00
+    命令字:   1字节 - 0x30
+    数据长度: 1字节 - 0x01
+    数据:    1字节
+              B0: 当前反转标志状态
+                  0x00 = 正常逻辑
+                  0x01 = 反转逻辑
+    校验和:   1字节 - 从帧头开始按字节求和，结果对256求余
+    ```
+
+=== "功能说明"
+    1. 该命令用于设置Mute引脚的输出逻辑反转
+    2. 当某些硬件设计的Mute逻辑与默认相反时，使用此命令进行适配
+    3. 配置会自动保存到Flash，断电后保持
+    4. 设置后立即生效，并返回当前状态
+
+=== "使用场景"
+    - 硬件设计中Mute脚极性与默认相反
+    - 需要适配不同硬件版本的设备
+
+=== "MCU示例"
+
+    **命令示例**
+    ```
+    55 AA 03 30 01 01 34
+    ```
+
+    **逐段解析**
+
+    | 字节段 | 长度 | 示例值 | 说明 |
+    |:-------|:-----|:-------|:-----|
+    | 帧头 | 2字节 | `55 AA` | 固定帧头 |
+    | 版本 | 1字节 | `03` | MCU发送给XU316 |
+    | 命令字 | 1字节 | `30` | 设置Mute引脚反转 |
+    | 数据长度 | 1字节 | `01` | 1字节数据 |
+    | 反转标志 | 1字节 | `01` | 0x01=反转逻辑 |
+    | 校验和 | 1字节 | `34` | 从 `55` 开始到反转标志结束，所有字节相加后对 256 取余的结果 |
+
+#### 3.3.12 获取固件版本命令（0xF1）
 
 === "命令格式"
     **MCU发送**
@@ -1067,6 +1128,7 @@ sequenceDiagram
 
 === "MCU发送示例"
 
+    **命令示例**
     ```
     55 AA 03 F1 02 00 00 F5
     ```
@@ -1115,6 +1177,7 @@ sequenceDiagram
 
 === "MCU发送示例"
 
+    **命令示例**
     ```
     55 AA 03 F0 04 00 00 00 00 F6
     ```