Amoi A928T Stock Firmware (Flash File) The Flash File will help you Upgrade, Downgrade, or re-install the Stock Firmware (OS) on your Mobile Device. In addition, the Flash File (ROM) also enables you to repair the Mobile device if facing any Software Issue, Bootloop Issue, IMEI Issue, or Dead Issue. File Name: Amoi_A928T_V2.2_SD_Update_20140513_OTA_4.2.2.zip File Size: 400 MB Android Version: 4.2.2 How to Flash (install): Copy update.zip to phone sd and flash it through the recovery menu. (Mediafire)