My problems was not caused by updates, but mainly by faulty charger, it has more that 5V on output, and it fried something on motherboard on my smartphone and tablet. Fortunately I got my phone repaired thanks to warranity, but tablet is still dead, so I stopped using that charger … I want to either sell it, or repair it. Iam from Czech Republic, and I think that I could ask some local repair shops to give me some price Iam gonna pay for fixing it. I just hope it wont be so expensive, and I could sell that fixed tablet for some money on better device.