how should we work with locked bootloader phone ???????

[AmirYeganeh]

hi team
all things in CM2 is best . but i have one big big big big problem
how should we work with bootloader locked phone (MTK) ?
for example i can do anything i want with Y520-u10
but i can't do anything with G610-U20 or G750-T01 or ......
i want read factory firmware for G750-t01 and i can't
another example is H30-U10 . i can't do any operation on that until i unlocked it's BL . after i unlock BL with some SECRO an PRELOADER file now i can do anything. but i don't have this file for other model

is there any way to UNLOCK BL of these mtk phone ? (without BL code )

if we can't how should we read firmware factory file from that ??

[JayDi]

Hello.
In some models exists FB-Locked boot. Enough use fastboot with "oem unlock" command.
It will destroy all userdata in it.

In other models exists protected from factory bootloader and require special boot sequence and setting. Impossible add that models correct without having them on hands. I collect some, but it take much time.

[AmirYeganeh]

can you give me one for example??

[JayDi]

Example for what? How use CMD?

[AmirYeganeh]

i know all cmd command . i want more knowledge for bootloader unlock with some example