(NVRAM) handles cellular connectivity. A universal firmware often results in an "Invalid IMEI" or "No Service" error if the modem database does not match the device's radio hardware. Storage Mapping:
Finding a single "universal" firmware for the MediaTek MT6572 Go to product viewer dialog for this item. mt6572 universal firmware
: Contains the drivers for the hardware. You often have to swap the boot.img or its internal kernel and RAMDISK to ensure the phone starts. (NVRAM) handles cellular connectivity