The 4.4.2 update focuses heavily on expanding support for and Qualcomm chipsets, particularly for newer security patches.
This specific update focused on enhancing stability and expanding support for newer security patches on MTK and SPD devices. Eft Pro 4.4.2
: Supports repairing IMEI for various chipsets (MTK, Qualcomm, SPD), unlocking networks, and writing CERT or NVRAM data. and writing CERT or NVRAM data.