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Viomi Rooting Tool

This tool aims to automate the rooting process described in Rooting the Xiaomi STYJ02YM (viomi-v7) Vacuum Robot.

It is known to work with the following models:

  • Mijia STYJ02YM (viomi-v7)
  • Mijia STYTJ02YM (viomi-v8) (experimental)

Prerequisites

  • a linux (Mac, raspberry pi or OpenWRT router may also work) machine with bash, ssh, wget, adb and sha256sum
  • the robot is already connected to your wifi (if you don't want to use the xiaomi app to do this, you can do this with python-miio
  • the linux machine needs to be on the same network as the robot
  • a good micro-USB cable (with data support) plugged into the robot’s micro-USB port.

Linux setup

You may need to install these packages, e.g. for Ubuntu:

apt install android-tools-adb wget coreutils

Mac setup

On Mac, install adb and sha256sum as follows:

# Package for adb
brew install android-platform-tools

# Package for sha256sum
brew install coreutils

Usage instructions

Clone this repository, then run the following command and follow its instructions:

./viomi-root.sh

Note: For newer viomi-v8 models, above will not work, but you can try the following experimental procedure based on findings by @Dropaq:

NEW_V8=1 ./viomi-root.sh

What’s the script doing?

  1. Enable the adb shell command.
  2. Temporarily disable robot services to allow the adb bridge to persist during setup.
  3. Install dropbear along with your ~/.ssh/id_rsa.pub public key
  4. (Optionally:) Install Valetudo.

Troubleshooting

No adb connection is established.

  • Check that adb and your cable is working in general by connecting to an android phone (enable usb debugging on it), e.g. by using adb shell.

  • Check the dmesg output to see if your computer ever recognized a USB devices. Some machines are too slow, some USB stacks flaky. People have reported success with a raspberry pi when their main computer didn’t work.

  • If you see a message like:

    adb: insufficient permissions for device
    See [http://developer.android.com/tools/device.html] for more information
    

    Follow the link for advice, in particular make sure that you are a member of the plugdev group and have setup correct udev rules (dmesg would probably show you the device ids).

  • Finally, this may not be working on first attempt, but may need multiple tries, but typically not more than 10.

The script was not able to establish a ssh connection and didn't finish.

Solution: Rerun the remaining steps of the script

./viomi-root.sh change_password
./viomi-root.sh restore_robot_services
./viomi-root.sh install_valetudo

The robot appears dead, but SSH or ADB are working.

Solution (does not apply to newer viomi-v8 models):

  • When SSH is working:

    ./viomi-root.sh restore_robot_services
    
  • When ADB is working:

    adb shell
    cd /etc/rc.d
    ln -s ../init.d/robotManager S90robotManager
    

I accidentally resetted the wifi settings (Robot already rooted!).

Solution:

  1. Please connect to your robot using: adb shell
  2. Edit the /etc/wifi/wpa_supplicant.conf file using, e.g. vim:
vim /etc/wifi/wpa_supplicant.conf
  1. Add these lines at the end of the file:
    network={
        ssid="SSIDGOESHERE"
        psk="PASSWORDHERE"
    }
    
  2. Reboot the device: reboot
  3. Check if your robot received an ip address: adb shell ip a
  4. Try to connect over ssh from your computer, and change your .ssh/config file accordingly ssh root@robotIP or ssh vacuum

About

Tool for rooting the Xiaomi STYJ02YM (viomi-v7) and Mijia STYTJ02YM (viomi-v8) vacuum robot

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