I have a "LENOVO Tab 2 A10-30" which got frozen after the update in the startup loop - did not start after displaying the Lenovo logo. I decided to reinstall it with the LineageOS, and for that I needed (according the articles) to do oem unlock. According articles I should get the OEM unlock key from settings or allow it in the settings - which I can't access as the device won't boot up.
So I tried bunch of commands from the commandline (ubuntu 20.04), I could not OEM unlock, but I was able to install LineageOS just fine. My question is - how come that it worked, even though it should not be able to unlock the OEM? What happened there?
Started device with holding vol up:
$ adb devices List of devices attached 0123456789ABCDEF sideload
Then I am not sure now what I selected in the menu, but then I went:
$ fastboot devices 84afc61e fastboot $ fastboot oem unlock ... FAILED (remote: oem unlock is not allowed) finished. total time: 0.002s $ fastboot oem unlock-go ... FAILED (remote: oem unlock is not allowed) finished. total time: 0.002s $ fastboot oem get_unlock_data ... FAILED (remote: unknown command) finished. total time: 0.002s fastboot oem device-info ... (bootloader) Device tampered: false (bootloader) Device unlocked: false (bootloader) Device critical unlocked: true (bootloader) Charger screen enabled: true (bootloader) Display panel: OKAY [ 0.007s] finished. total time: 0.007s
But I tried to flash in the TWRP recovery image anyhow:
$ fastboot flash recovery recovery.img target reported max download size of 262144000 bytes sending 'recovery' (11700 KB)... OKAY [ 0.446s] writing 'recovery'... OKAY [ 0.947s] finished. total time: 1.393s $ fastboot boot recovery.img downloading 'boot.img'... OKAY [ 0.449s] booting... OKAY [ 0.023s] finished. total time: 0.471s
After that, with volume up on boot I got in to TWRP menu; where I installed gaps and LineageOS zips, and after reboot it was just there.
My research links: