- Jul 26, 2007
First you need to unlock the bootloader. You need to be patient when you are flashing the unlock, my device took some 10 mins to complete, but in the end it succeeded (on the 2nd try, mind you.)
Here is a guide for unlocking in windows, though it is in russian (Im attaching the required modified fastboot in case you cannot download it from 4pda).
When you're done unlocking the bootloader, you've already done the hard part.
Next, download your preferred GSI image from Google, from phhusson's, or whatever else you find (Pixel Experience for eg.). Mind you, that the image from Google contains the Android 12L version.
Next you will flash your active system partition with the GSI image. To do that, initate ADB connection to your tablet, then enter fastbootd, by issuing the command:
fastboot reboot fastboot
you can check your active system slot by:
fastboot getvar all (but it will be slot "a" unless you have received an OTA update previously)
you need to free up some space by deleting the logical partition product otherwise you wont be able to flash your gsi:
fastboot delete-logical-partition product_a
(in case your active slot is "a")
then you can move forward to actually flashing your GSI:
fastboot flash system_a whateverisyourimagefilename.img
Lastly, you will need to wipe userdata, which can be done on the tablet by switching to recovery from fastbootd, and then selecting wipe userdata, or maybe the fastboot -w command does the same.
Reboot, and enjoy your GSI.
I'm using the Google 12L GSI, and it is perfectly stable for daily usage. For bluetooth audio to work, you will have to disable bluetooth a2dp hardware offload in developer options.
thanks for the guide, I've unlocked my bootloader. would there be a way to go back to stock IF we wanted?