SP Unlock

will it be possible to unlock sc7715 NAND phones?

I used to unlock some SPD 8810 blu phones lockewd to DIGICEL, by flashing Generic BLU firmwares for same model.

tried this on 7715 by Read Generic firmware from phone and writing it to DIGICEL phone but phone is locked.

is there something I can do?

I have here right now both phones
the locked and the unlocked

and a third phone which is Locked and has the original DIGICEL firmware yet.