I buy a new tablet Teclast X98 Air 3G 64Gb (C5J6 rev.) and i want update only android os without 100500 chiness apps (ex. X98 Air 3G 4.4.4(C5Jx) Mirek190). Before flashing i must update bios to v2.02? or not? if yes, i must use X98 Air 3G Flasher Bios 2.02 – Works On 100 % On C5J6, C6J6, C8J7