While there is no single "official" universal firmware for the chipset, the concept usually refers to a base firmware used to revive or "port" software across the thousands of clones and low-budget devices that share this processor.
Install.bat as administrator.: Some firmware versions help bypass Factory Reset Protection (FRP) on older builds. mt6572 universal firmware
Disclaimer: Flashing custom or universal firmware voids warranties and carries a risk of permanent hardware damage if done incorrectly (e.g., wrong preloader frequency). Proceed at your own risk. MediaTek MT6572 While there is no single "official"