To enter the recovery mode, in the 7 buttons models:
- Turn the device on, while keeping the 1st and 5th buttons pressed (return + magnifier)
- Will should see an Ubuntu logo
- If the new / recovery firmare is int he SD Card it will begin instalation, if not, it will throw an error
To enter the touch screen calibration, in the 7 buttons models:
- Turn the device on, while keeping the 1st and 2nd buttons pressed (return + eraser)
- Will should see the touch screen calibration on the screen
To enter the QEngineer mode, in the 7 buttons models:
- Turn on the device, while keeping the 1st and 7th buttons pressed (return + page forward)
- You should see the QEngineer screen