Using the key to navigate and Power to select, I highlighted "YES."
adb reboot bootloader The screen went black. My heart skipped. Then—nothing. Just a black void. How to Open Bootloader Mode on LENOVO Tab P11
fastboot flashing unlock On the tablet’s black screen, a prompt appeared in microscopic text: "Do you want to unlock the bootloader? This will void your warranty and erase all data." Using the key to navigate and Power to