Tap 7 times until you see "You are now a developer". Go back to Settings > System > Developer options . Enable USB Debugging and OEM unlocking . Step 2: Unlock the Bootloader Connect your tablet to your PC.
Go to Settings > System > Developer Options and toggle on OEM Unlocking and USB Debugging .
: Incorrectly flashing files can result in a "bootloop" or "brick" (rendering the device unusable). Phase 1: Preparations