Engineer bootloader is used for using specific softwares without tripping knox iirc, it is not compatible mostly with devices and is very rare to find and make it work..
But here is the combination rom you wanted, use it for recovery or csc cha...
get a downgrade script from here
and put it in your fastboot rom files. overwrite it and then flash.
what u have to do is...
1) (if the screen is blank even after power on) power on the device
2) Download SDI and connect ur phone to pc. if it connects with unknown drivers , use SDI to detect those drivers and it will take care of it
(in my ca...
for miui roms always use CWM recovery.
wifi is not working after clean wipe??
whats the issue??