Tinh hinh la minh root may nhung khong khoa duoc man hinh. Len dien dan hoi thi cac qtv bao update OTA thi se khoa duoc man hinh, nhung minh len google tim hieu cach de update OTA thi tren do nguoi ta bao rang chi update OTA khi may nang cap phien ban RAM bang OTA( con nang cap phien ban RAM qua cong usb voi desktop thi khong update OTA duoc) mong qtv giup do.(minh nang cap ban room toan bang ket noi usb voi desktop)
