docs(q8b): replace Armbian guide with Imager tutorial

docs/dragon/q8b/other-system/armbian.md

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-# Armbian
+# 安装 Armbian 26
 
-Armbian 是一个面向 ARM 主板的轻量级 Linux 发行版，以稳定性、高性能和良好的硬件支持而闻名。它提供了针对各种 ARM 主板优化的 Debian 和 Ubuntu 基础系统。
+Armbian Imager 是 Armbian 官方推出的系统镜像下载与烧录工具，支持在线下载官方镜像，也可以写入本地镜像文件。工具会自动完成镜像下载、解压、写入及数据校验。
 
-Radxa Dragon Q8B 基于高通骁龙 8cx Gen 3（高通 SC8280XP）计算平台，支持运行 Armbian 系统。
+:::caution
+烧录操作会清除目标存储设备中的全部数据。请提前备份重要文件，并仔细确认目标设备。
+:::
 
-## 系统镜像下载
+## 连接目标设备
 
-Armbian 为 Radxa Dragon Q8B 提供多个版本的系统镜像，提供 Linux 内核 **vendor 7.0.11**（稳定版）与 **edge 7.1.8**（滚动版）两种内核线：
+将需要烧录的存储设备连接至电脑。
 
-### 稳定版镜像
+:::tip
+Armbian Imager 支持将系统直接烧录到 UFS 模块。将 UFS 模块安装到主板，使主板[进入 EDL 模式](../low-level-dev/edl-mode)，再通过 USB 数据线连接电脑，然后选择对应的 UFS 系统镜像进行烧录。
+:::
 
-Armbian 官方推荐、经过充分测试的稳定版镜像（Stable）：
+## 下载 Armbian Imager
 
-- **Armbian 26.8.1 - Ubuntu 26.04 (Gnome 桌面版)**：基于 vendor 7.0.11 内核，完整桌面环境，适合日常使用
-- **Armbian 26.8.1 - Debian 13 (最小化版)**：基于 vendor 7.0.11 内核，轻量级系统，适合物联网应用
+访问 [Armbian Imager](https://imager.armbian.com/) 官网，下载与你的操作系统和处理器架构相匹配的版本，并完成安装。
 
-### 其他版本
+## 使用 Armbian Imager
 
-除稳定版外，Armbian 还提供以下版本：
+打开 Armbian Imager，点击 `Start now` 进入设备与镜像选择界面。
 
-- **桌面版**：Ubuntu 26.04 的 Cinnamon / Gnome / KDE Plasma 桌面环境
-- **最小化版**：Ubuntu 26.04 / Debian 13 最小化系统（含支持 UFS 存储的版本）
-- **专用版本**：Kali Linux、Home Assistant、OpenMediaVault 等
+<img src="/img/dragon/q8b/armbian/01-start-now.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-:::tip
-- 推荐使用 [Armbian Imager](https://www.armbian.com/imager/) 下载并烧录镜像。
-- 滚动版（edge 内核）仅适合有经验的 Linux 用户，不推荐在生产环境中使用。
+### 选择厂商
+
+在厂商列表中选择 `Radxa`。
+
+<img src="/img/dragon/q8b/armbian/02-vendor-radxa.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 选择主板
+
+选择需要安装系统的产品型号，本教程以 `Dragon Q8B` 为例。
+
+:::note
+请务必选择与实际硬件一致的型号，以确保镜像及启动配置正确。
 :::
 
-下载地址：[Armbian Radxa Dragon Q8B 下载页面](https://armbian.com/boards/radxa-dragon-q8b)
+<img src="/img/dragon/q8b/armbian/03-board.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 选择镜像
+
+选择需要安装的 Armbian 系统镜像。本教程以 Armbian Ubuntu 26.04 为例，具体可用版本以软件界面显示为准。
+
+如果烧录目标为 UFS 模块，请选择适用于 UFS 的镜像，其镜像选项通常包含 `UFS` 标识。
+
+<img src="/img/dragon/q8b/armbian/04-image.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 选择本地镜像（可选）
+
+如果已经下载了系统镜像，可以选择 `Custom Image`，导入本地镜像文件。
+
+选择本地镜像后，无需再选择厂商、主板及在线镜像，可直接进入目标存储设备选择步骤。
+
+<img src="/img/dragon/q8b/armbian/05-custom-image.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 选择目标存储设备
+
+选择需要写入系统的存储设备，并仔细核对设备名称和容量。
+
+:::caution
+所选设备中的原有数据将被全部清除，请勿误选电脑系统盘或其他重要存储设备。
+:::
+
+<img src="/img/dragon/q8b/armbian/06-target-device.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 开始烧录
+
+确认镜像和目标设备无误后，点击 `Erase & Flash`。Armbian Imager 将依次下载镜像（使用本地镜像时跳过）、解压镜像、擦除目标设备、写入系统镜像并校验写入数据。
+
+<img src="/img/dragon/q8b/armbian/07-erase-flash.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 完成烧录
+
+出现 `Flash Complete!` 提示后，表示系统镜像已经成功写入并完成校验。
+
+<img src="/img/dragon/q8b/armbian/08-flash-complete.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+## 使用系统
+
+若通过 EDL 模式将系统镜像烧录至 UFS 模块，烧录完成后，上电即可自动启动系统。
+
+若系统安装在 microSD 卡或 NVMe SSD 中，请先将相应存储介质安装至主板对应插槽，再连接电源适配器，设备将自动启动系统。
+
+### 设置 root 密码
+
+首次启动系统后，根据提示为 root 用户设置密码。
+
+<img src="/img/dragon/q8b/armbian/09-root-password.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### 选择系统终端
+
+选择默认使用的命令行 Shell。
+
+<img src="/img/dragon/q8b/armbian/10-shell.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-## 烧录系统
+### 设置用户名和密码
 
-Armbian 镜像的烧录方法与 Radxa OS 一致，可以参考以下页面：
+根据提示创建普通用户并设置密码。
 
-- [安装系统到 microSD 卡](../getting-started/install-system/sd-system)
-- [安装系统到 UFS](../getting-started/install-system/ufs-system/)
-- [安装系统到 NVMe](../getting-started/install-system/nvme-system/)
+<img src="/img/dragon/q8b/armbian/11-user-password.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-## 首次启动配置
+### 设置地区和时区
 
-首次启动时，系统会引导您完成基本配置：
+根据所在地区选择语言环境、国家和时区，并确认设置。
 
-1. 设置 root 密码
-2. 创建普通用户账户
-3. 确认语言设置
-4. （可选）将系统转移到内部存储
+<img src="/img/dragon/q8b/armbian/12-locale-select.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-您也可以使用 `armbian-config` 工具进行系统配置，包括：
+<img src="/img/dragon/q8b/armbian/13-locale-confirm.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-- 网络设置（静态/动态 IP、热点）
-- 更换登录 Shell（ZSH）
-- 启用 SSH 双因素认证
-- 安装常用软件
-- 系统优化等
+### 系统界面
 
-## 相关资源
+完成系统设置后，会进入 Armbian 系统桌面。
 
-- [官方文档](https://docs.armbian.com/)
-- [技术支持论坛](https://forum.armbian.com/)
-- [问题反馈](https://www.armbian.com/bugs/)
-- [常见问题](https://docs.armbian.com/User-Guide_FAQ/)
+<img src="/img/dragon/q8b/armbian/14-desktop.webp" style={{width: '100%', maxWidth: '1200px'}} />

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-# Armbian
+# Install Armbian 26
 
-Armbian is a lightweight Linux distribution for ARM motherboards, known for its stability, high performance, and excellent hardware support. It provides Debian and Ubuntu-based systems optimized for various ARM single-board computers.
+Armbian Imager is the official image download and flashing utility from Armbian. It can download official images online or write a local image file. The utility automatically downloads, decompresses, writes, and verifies the image.
 
-The Radxa Dragon Q8B is based on the Qualcomm Snapdragon 8cx Gen 3 (Qualcomm SC8280XP) compute platform and supports running Armbian.
+:::caution
+Flashing erases all data on the target storage device. Back up important files and carefully confirm the target device before continuing.
+:::
 
-## System Image Downloads
+## Connect the Target Device
 
-Armbian provides multiple system images for the Radxa Dragon Q8B, offering two kernel lines: **vendor 7.0.11** (stable) and **edge 7.1.8** (rolling):
+Connect the storage device that you want to flash to your computer.
 
-### Stable Release Images
+:::tip
+Armbian Imager can flash a system directly to a UFS module. Install the UFS module on the board, put the board into [EDL mode](../low-level-dev/edl-mode), connect the board to your computer with a USB cable, and then select the corresponding UFS system image.
+:::
 
-Official Armbian images that are hand-selected and well-tested (Stable):
+## Download Armbian Imager
 
-- **Armbian 26.8.1 - Ubuntu 26.04 (Gnome Desktop)**: Based on the vendor 7.0.11 kernel, full desktop environment for daily use
-- **Armbian 26.8.1 - Debian 13 (Minimal)**: Based on the vendor 7.0.11 kernel, lightweight system for IoT applications
+Visit the [Armbian Imager](https://imager.armbian.com/) website, download the version that matches your operating system and processor architecture, and install it.
 
-### Other Images
+## Use Armbian Imager
+Open Armbian Imager and click `Start now` to open the board and image selection screen.
 
-In addition to the stable releases, Armbian also provides:
+<img src="/img/dragon/q8b/armbian/01-start-now.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-- **Desktop**: Ubuntu 26.04 with Cinnamon / Gnome / KDE Plasma desktop environments
-- **Minimal**: Ubuntu 26.04 / Debian 13 minimal systems (including versions supporting UFS storage)
-- **Dedicated applications**: Kali Linux, Home Assistant, OpenMediaVault, and more
+### Select the Manufacturer
 
-:::tip
-- It is recommended to use [Armbian Imager](https://www.armbian.com/imager/) to download and flash images.
-- Rolling releases (edge kernel) are only suitable for experienced Linux users and not recommended for production environments.
+Select `Radxa` from the manufacturer list.
+
+<img src="/img/dragon/q8b/armbian/02-vendor-radxa.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Select the Board
+
+Select the product on which you want to install the system. This guide uses `Dragon Q8B` as an example.
+
+:::note
+Select the model that matches your actual hardware to ensure that the image and boot configuration are correct.
+:::
+
+<img src="/img/dragon/q8b/armbian/03-board.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Select the Image
+
+Select the Armbian system image that you want to install. This guide uses Armbian Ubuntu 26.04 as an example. Available versions may change; refer to the versions shown in Armbian Imager.
+
+If the target is a UFS module, select an image designed for UFS. These image options usually include a `UFS` label.
+
+<img src="/img/dragon/q8b/armbian/04-image.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Select a Local Image (Optional)
+
+If you have already downloaded a system image, select `Custom Image` and import the local image file.
+
+After selecting a local image, you do not need to select a manufacturer, board, or online image. You can proceed directly to selecting the target storage device.
+
+<img src="/img/dragon/q8b/armbian/05-custom-image.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Select the Target Storage Device
+
+Select the storage device to which the system will be written, and carefully verify its name and capacity.
+
+:::caution
+All existing data on the selected device will be erased. Do not select your computer's system drive or another important storage device.
 :::
 
-Download: [Armbian Radxa Dragon Q8B Download Page](https://armbian.com/boards/radxa-dragon-q8b)
+<img src="/img/dragon/q8b/armbian/06-target-device.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Start Flashing
+
+After confirming the image and target device, click `Erase & Flash`. Armbian Imager downloads the image (skipped for a local image), decompresses it, erases the target device, writes the system image, and verifies the written data.
+
+<img src="/img/dragon/q8b/armbian/07-erase-flash.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Complete Flashing
+
+When `Flash Complete!` appears, the system image has been written and verified successfully.
+
+<img src="/img/dragon/q8b/armbian/08-flash-complete.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+## Use the System
+
+If you flashed the system image to a UFS module through EDL mode, power on the board after flashing and the system will start automatically.
+
+If the system is installed on a microSD card or NVMe SSD, install the storage device in the corresponding slot on the board, and then connect the power adapter. The device will start automatically.
+
+### Set the Root Password
+
+At first boot, follow the prompts to set a password for the root user.
+
+<img src="/img/dragon/q8b/armbian/09-root-password.webp" style={{width: '100%', maxWidth: '1200px'}} />
+
+### Select the System Shell
+
+Select the default command-line shell.
+
+<img src="/img/dragon/q8b/armbian/10-shell.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-## Flashing the System
+### Set the Username and Password
 
-The Armbian images are flashed in the same way as Radxa OS. Please refer to the following pages:
+Follow the prompts to create a regular user and set its password.
 
-- [Install system to microSD card](../getting-started/install-system/sd-system)
-- [Install system to UFS](../getting-started/install-system/ufs-system/)
-- [Install system to NVMe](../getting-started/install-system/nvme-system/)
+<img src="/img/dragon/q8b/armbian/11-user-password.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-## First Boot Configuration
+### Set the Locale and Time Zone
 
-On first boot, the system will guide you through basic configuration:
+Select the locale, country, and time zone for your region, and then confirm the settings.
 
-1. Set root password
-2. Create a regular user account
-3. Confirm language settings
-4. (Optional) Transfer system to internal storage
+<img src="/img/dragon/q8b/armbian/12-locale-select.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-You can also use the `armbian-config` tool for system configuration, including:
+<img src="/img/dragon/q8b/armbian/13-locale-confirm.webp" style={{width: '100%', maxWidth: '1200px'}} />
 
-- Network settings (static/dynamic IP, hotspot)
-- Change login shell (ZSH)
-- Enable SSH two-factor authentication
-- Install common software
-- System optimization, etc.
+### System Desktop
 
-## Related Resources
+After completing the initial setup, the Armbian desktop appears.
 
-- [Official Documentation](https://docs.armbian.com/)
-- [Technical Support Forum](https://forum.armbian.com/)
-- [Bug Reports](https://www.armbian.com/bugs/)
-- [FAQ](https://docs.armbian.com/User-Guide_FAQ/)
+<img src="/img/dragon/q8b/armbian/14-desktop.webp" style={{width: '100%', maxWidth: '1200px'}} />