docs: update NanoKVM Pro flashing instructions

docs/hardware/en/kvm/NanoKVM_Pro/faq.md

@@ -71,7 +71,7 @@ When connected through video adapters or docking stations, the reported capabili
 
 ## Image Burning Methods
 
-### USB Burning
+### USB Burning (eMMC Version)
 
 NanoKVM Pro supports restoring or updating the system via USB image burning.
 
@@ -148,14 +148,14 @@ sudo sync
 * The first startup may take a long time for initialization and configuration.
 * If the orange light does not turn on or the disk device does not appear, please refer to the methods below to use AXDL for burning.
 
-### AXDL Burning
+### AXDL Burning (eMMC Version)
 
 AXDL is an official burning tool provided by Aixin, designed for burning AXP format system images. It currently supports Windows platform only.
 
 #### Preparation
 
 * Prepare a USB data cable.
-* Visit the [NanoKVM Pro Release Page](https://github.com/sipeed/NanoKVM-Pro/releases) to download the latest AXP format image file.
+* Visit the [NanoKVM Pro Release Page](https://github.com/sipeed/NanoKVM-Pro/releases/latest) to download the latest AXP format image file.
 * Download and install the AXDL tool and corresponding drivers [Download Link](https://dl.sipeed.com/shareURL/MaixIV/M4N-Dock/10_PC_Software).
 
 #### Burning Steps
@@ -177,26 +177,24 @@ AXDL is an official burning tool provided by Aixin, designed for burning AXP for
    * The burning process will start automatically, wait for the progress bar to complete.
    * Wait until the prompt indicates that burning was successful; the entire process is complete.
 
-### SD Card Flashing
+### SD Card Flashing (eMMC or SD Card Version)
 
-The NanoKVM Pro Desk supports writing an image from an SD card to the internal eMMC to restore or update the system. Note: this only supports flashing an image from an SD card to the internal eMMC; the device cannot boot directly from the SD card.
+The NanoKVM Pro Desk currently supports booting the system from an SD card. Users can boot the system by flashing an SD card. This applies to both the eMMC and SD card versions of NanoKVM Pro.
 
 #### Preparation
 
-* Prepare an SD card with at least 8 GB capacity.
+* Prepare an SD card with at least 16 GB capacity.
-* Download the latest NanoKVM Pro SD image from the [NanoKVM Pro Releases](https://github.com/sipeed/NanoKVM-Pro/releases) page (the image is usually provided in a zip archive). Extract the archive and locate the `img` file.
+* Download the latest [NanoKVM Pro SD image](https://github.com/sipeed/NanoKVM-Pro/releases/latest).
 * Prepare a flashing tool such as `balenaEtcher`, `Rufus`, or use the command-line `dd`.
 * Prepare a USB card reader to connect the SD card.
 
 #### Flashing Steps
 
-1. Use `balenaEtcher` or `dd` to write the `img` file to the SD card (see the "USB Burning" section above for details on writing images).
+1. Use `balenaEtcher` or `dd` to write the image to the SD card (see the "USB Burning" section above for details on writing images).
 2. Insert the flashed SD card into the NanoKVM Pro's SD card slot.
 3. Disconnect power from the NanoKVM Pro Desk.
-4. Press and hold the NanoKVM Pro Desk `User` button, then connect power.
+4. Press and hold the NanoKVM Pro Desk `User` button while connecting power, then immediately release the `User` button. The device will boot from the SD card.
-5. When the orange LED starts flashing steadily, the device is writing the image from the SD card to the internal eMMC.
+5. To flash the eMMC after booting from the SD card, copy the eMMC image into the system, then use the `dd` command to write the image to `/dev/mmcblk0`.
-6. After flashing completes, the orange LED will stay solid, indicating success.
-7. Disconnect power, remove the SD card, and reconnect power. The device will boot the new system from internal eMMC.
 
 ## Desk Version LCD Not Lighting Up
 
@@ -210,4 +208,3 @@ Click [here](https://wiki.sipeed.com/nanokvmpro-lcd) to view the issue and repai
 In the first batch of NanoKVM-Desk units, the screw in the top-left position (shown below) was found to affect WiFi connection stability due to structural design considerations. This screw hole is intentionally left empty in later assemblies.
 
 ![](./../../../assets/NanoKVM/pro/faq/screw.jpg)
-

docs/hardware/zh/kvm/NanoKVM_Pro/faq.md

@@ -6,8 +6,6 @@ NanoKVM Pro 会不定期更新应用，一些问题可能在新的应用中已
 
 ## 系统启动
 
-
-
 ### 绿色LED闪烁
 
 绿色LED是 NanoKVM Pro 的电源指示，如果连接了供电能力较弱的电源，绿色LED会因电压不稳定而无法启动，请拔掉所有供电并更换电源
@@ -73,7 +71,7 @@ NanoKVM-Pro具有采集和环出视频的功能，仅采集时默认向主机汇
 
 ## 镜像烧录方法
 
-### USB 烧录
+### USB 烧录（EMMC 版本）
 
 NanoKVM Pro 支持通过 USB 烧录镜像的方式来恢复或更新系统。
 
@@ -153,14 +151,14 @@ sudo sync
 - 首次启动可能需要较长时间进行初始化配置
 - 如果橙色灯一直不亮，或者磁盘设备没有出现，请参考下面的方法使用 AXDL 烧录
 
-### AXDL 烧录
+### AXDL 烧录（EMMC 版本）
 
 AXDL 是爱芯官方推出的镜像烧录工具，可以烧录 AXP 格式的系统镜像，目前仅支持 Windows 平台。
 
 #### 准备工作
 
 - 准备一根 USB 数据线
-- 访问 [NanoKVM Pro 发布页面](https://github.com/sipeed/NanoKVM-Pro/releases) 下载最新的 AXP 格式镜像文件
+- 访问 [NanoKVM Pro 发布页面](https://github.com/sipeed/NanoKVM-Pro/releases/latest) 下载最新的 AXP 格式镜像文件
 - 下载并安装 AXDL 工具和对应驱动 [下载地址](https://dl.sipeed.com/shareURL/MaixIV/M4N-Dock/10_PC_Software)
 
 #### 烧录步骤
@@ -182,26 +180,24 @@ AXDL 是爱芯官方推出的镜像烧录工具，可以烧录 AXP 格式的系
    - 烧录将自动开始，等待进度条完成
    - 直到提示烧录成功，整个过程完成
 
-### SD 卡烧录
+### SD 卡烧录（EMMC 版本或 SD 卡版本）
 
-NanoKVM Pro Desk 支持通过 SD 卡将镜像写入内置 eMMC 来恢复或更新系统。注意：目前仅支持将镜像从 SD 卡烧录到内置 eMMC，设备不能直接从 SD 卡启动。
+NanoKVM Pro Desk 目前支持从 SD 卡启动系统，用户可以通过烧录 SD 卡的方式启动系统，适用于 eMMC 版本和 SD 卡版本的 NanoKVM-Pro。
 
 #### 准备工作
 
-- 准备一张容量至少 8 GB 的 SD 卡。
+- 准备一张容量至少 16 GB 的 SD 卡。
-- 下载最新的 [NanoKVM Pro SD 镜像](https://github.com/sipeed/NanoKVM-Pro/releases)（通常为 zip 压缩包），解压后取出其中的 `img` 文件。
+- 下载最新的 [NanoKVM Pro SD 镜像](https://github.com/sipeed/NanoKVM-Pro/releases/latest)。
 - 准备烧录工具（如 `balenaEtcher`、`Rufus` 或使用命令行的 `dd`）。
 - 准备一个 USB 读卡器以连接 SD 卡。
 
 #### 烧录步骤
 
-1. 使用 `balenaEtcher` 或 `dd` 将 `img` 镜像写入 SD 卡（具体写入方法参照上文“USB 烧录”部分）。
+1. 使用 `balenaEtcher` 或 `dd` 将镜像写入 SD 卡（具体写入方法参照上文“USB 烧录”部分）。
 2. 将写好镜像的 SD 卡插入 NanoKVM Pro 的 SD 卡槽。
 3. 断开 NanoKVM Pro Desk 的电源。
-4. 按住 NanoKVM Pro Desk 的 `User` 按键，同时接通电源。
+4. 按住 NanoKVM Pro Desk 的 `User` 按键，同时接通电源。然后马上松开 `User` 按键，设备将从 SD 卡启动。
-5. 当橙色 LED 开始匀速闪烁时，表示开始将 SD 卡中的镜像烧录到内置 eMMC。
+5. 如果想通过 SD 卡启动系统烧录 EMMC，请在 SD 卡启动后，将 EMMC 镜像拷贝到系统中，然后使用 dd 命令将镜像写入 `/dev/mmcblk0` 即可。
-6. 烧录完成后，橙色 LED 由闪烁变为常亮，表示烧录成功。
-7. 断开电源并取出 SD 卡，重新接通电源后设备将从内置 eMMC 自动启动新系统。
 
 ## Desk版本LCD不亮