I have read the instructions and downloaded the other files. The files are:
- Likebook Mars 8.1 Upgrade Instruction.zip
- DriverAssitant_v4.5.zip
- AndroidTool_Release_v2.58(English).rar
- T80D-Mars-Android8.1-FW.rar
The instructions mention rooting. Since the instructions were probably written by a Chinese person or translated from Chinese, I wanted to ask if anyone has checked that the device is actually rooted after the update.