This is an advanced method for when the standard Fastboot method fails. , but it is complex and for experienced users.
First, he needed to enable OEM Unlocking . He tapped Settings > About Tablet and tapped Build Number seven times until the screen toasted, "You are now a developer!" He navigated to Developer Options and toggled OEM Unlocking to 'On'. This was the theoretical key, but the lock remained. how to root lenovo tb8505f top
Open the app on your tablet, find the top card labeled "Magisk", and tap Install . Under options, tap Select and Patch a File . This is an advanced method for when the