hi mallone.. sorry it's not possible to downgrade the firmware once has been upgraded ,,
it's like the bios on a pc.. and the only way I know is to replace the bios chip on the pc.
i think it does say this, "warn you", before you start the process of updating the firmware it's not reversible, and to backup your data just in case ,.. but saying that it could possibly be done by someone who knows what they are doing, " with the the system inside out", or you'll end up with a bricked up phone,, 😭,, so if i was you don't try to..
yip, add me to the list. Been getting a "laggy" response to touch since update a week ago. Was actually getting to the point of returning the tablet for a warranty fix as I thought I had a hardware fault before finding this thread