小米路由器4Q刷机教程openwrt+恢复原厂

第一步解锁SSH

第二步刷入openwrt

原厂分区
BusyBox v1.19.4 (2018-05-22 00:44:54 UTC) built-in shell (ash)
Enter 'help' for a list of built-in commands.

 -----------------------------------------------------
       Welcome to XiaoQiang!
 -----------------------------------------------------
  $$$$$$\  $$$$$$$\  $$$$$$$$\      $$\      $$\        $$$$$$\  $$\   $$\
 $$  __$$\ $$  __$$\ $$  _____|     $$ |     $$ |      $$  __$$\ $$ | $$  |
 $$ /  $$ |$$ |  $$ |$$ |           $$ |     $$ |      $$ /  $$ |$$ |$$  /
 $$$$$$$$ |$$$$$$$  |$$$$$\         $$ |     $$ |      $$ |  $$ |$$$$$  /
 $$  __$$ |$$  __$$< $$  __|        $$ |     $$ |      $$ |  $$ |$$  $$<
 $$ |  $$ |$$ |  $$ |$$ |           $$ |     $$ |      $$ |  $$ |$$ |\$$\
 $$ |  $$ |$$ |  $$ |$$$$$$$$\       $$$$$$$$$  |       $$$$$$  |$$ | \$$\
 \__|  \__|\__|  \__|\________|      \_________/        \______/ \__|  \__|


root@XiaoQiang:~# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 01000000 00010000 "ALL"
mtd1: 00030000 00010000 "Bootloader"
mtd2: 00010000 00010000 "Nvram"
mtd3: 00010000 00010000 "Bdata"
mtd4: 00010000 00010000 "crash"
mtd5: 00010000 00010000 "art"
mtd6: 00020000 00010000 "cfg_bak"
mtd7: 00170000 00010000 "overlay"
mtd8: 00e00000 00010000 "firmware"
mtd9: 00d00000 00010000 "rootfs"

login as: root
root@192.168.31.1's password:
    ┌──────────────────────────────────────────────────────────────────────┐
    │                 • MobaXterm Personal Edition v25.3 •                 │
    │               (SSH client, X server and network tools)               │
    │                                                                      │
    │ ⮞ SSH session to root@192.168.31.1                                   │
    │   • Direct SSH      :  ✓                                             │
    │   • SSH compression :  ✗  (disabled or not supported by server)      │
    │   • SSH-browser     :  ✓                                             │
    │   • X11-forwarding  :  ✓  (remote display is forwarded through SSH)  │
    │                                                                      │
    │ ⮞ For more info, ctrl+click on help or visit our website.            │
    └──────────────────────────────────────────────────────────────────────┘

sh: /usr/bin/X11/xauth: not found


BusyBox v1.19.4 (2018-05-22 00:44:54 UTC) built-in shell (ash)
Enter 'help' for a list of built-in commands.

 -----------------------------------------------------
       Welcome to XiaoQiang!
 -----------------------------------------------------
  $$$$$$\  $$$$$$$\  $$$$$$$$\      $$\      $$\        $$$$$$\  $$\   $$\
 $$  __$$\ $$  __$$\ $$  _____|     $$ |     $$ |      $$  __$$\ $$ | $$  |
 $$ /  $$ |$$ |  $$ |$$ |           $$ |     $$ |      $$ /  $$ |$$ |$$  /
 $$$$$$$$ |$$$$$$$  |$$$$$\         $$ |     $$ |      $$ |  $$ |$$$$$  /
 $$  __$$ |$$  __$$< $$  __|        $$ |     $$ |      $$ |  $$ |$$  $$<
 $$ |  $$ |$$ |  $$ |$$ |           $$ |     $$ |      $$ |  $$ |$$ |\$$\
 $$ |  $$ |$$ |  $$ |$$$$$$$$\       $$$$$$$$$  |       $$$$$$  |$$ | \$$\
 \__|  \__|\__|  \__|\________|      \_________/        \______/ \__|  \__|


root@XiaoQiang:~# md5sum /tmp/xiaomi_mi-router-4q-squashfs-sysupgrade.bin
9490888b36e3fdc776626d70efbd4218  /tmp/xiaomi_mi-router-4q-squashfs-sysupgrade.bin
root@XiaoQiang:~# mtd -r write /tmp/xiaomi_mi-router-4q-squashfs-sysupgrade.bin
firmware
Unlocking firmware ...

Writing from /tmp/xiaomi_mi-router-4q-squashfs-sysupgrade.bin to firmware ...   
Rebooting ...

Network error: Software caused connection abort

────────────────────────────────────────────────────────────────────────────────

Session stopped
    - Press <Return> to exit tab
    - Press R to restart session
    - Press S to save terminal output to file

opnewrt分区
BusyBox v1.36.1 (2026-04-22 01:24:34 UTC) built-in shell (ash)

.___                               __         .__
|   | _____   _____   ____________/  |______  |  |
|   |/     \ /     \ /  _ \_  __ \   __\__  \ |  |
|   |  Y Y  \  Y Y  (  <_> )  | \/|  |  / __ \|  |__
|___|__|_|  /__|_|  /\____/|__|   |__| (____  /____/
          \/      \/  BE FREE AND UNAFRAID  \/
 -----------------------------------------------------
 ImmortalWrt 24.10.6, r33869-cf234f8de6d5
 -----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
root@ImmortalWrt:~# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00030000 00010000 "u-boot"
mtd1: 00010000 00010000 "nvram"
mtd2: 00010000 00010000 "boarddata"
mtd3: 00010000 00010000 "crash"
mtd4: 00010000 00010000 "art"
mtd5: 00020000 00010000 "cfg_bak"
mtd6: 00170000 00010000 "overlay"
mtd7: 00e00000 00010000 "firmware"
mtd8: 002c0000 00010000 "kernel"
mtd9: 00b40000 00010000 "rootfs"
mtd10: 00580000 00010000 "rootfs_data"
root@ImmortalWrt:~#