How to root a Lenovo Tab M8 FHD (TB_8705F)

Here is a solution that I found after a lot of research and trial and error.

Disclaimer I don't take any responsibility for your device follow this at your own risk!

1. Warning This step will factory reset device (delete all your data) Unlock your bootloader.
   
   
   
   • Turn on OEM unlocking and USB Debugging in developer settings.
   
   
   • On Pc do fastboot flashing unlock. For more info on unlocking please see here.
   
   
   
   


2. Get the firmware for your device using "Rescue and Smart Assistant"
   form Lenovo's website. You will need to log in with your Lenovo ID
   to be able to


3. Install Magisk Manager on your device.


4. Get the boot.img from the firmware and copy it onto your device.


5. In Magisk Manager click on Install and select Select and Patch File then select the boot.img you copied.


6. Copy the patched image back to the PC.


7. Flash the patched image to the boot partition with fastboot.

All Done!