Teno and Infinix devices have received a vulnerability for unlocking bootloader via patching UBoot_A and VB_Meta A to unlock device bootloader and install customized firmwarethis method has been tested on Tecno KM4 Itel A90(A6610l) and Infinix X6725 and X6725BThe other one for mediatek devices is via patching Lk_A LK_B