i unlcoked my w580i
used xs++ 2.0
used firmwares
used a w550 custom pack and everything worked fine so far
later ill get a w580i custom pack when ill be able to download it
do you even know the difference between unlock and debrand?? you can't unlock the phone with just flashing the FS and MAIN you have to access and alter the GDFS which is completely not related to the FS and MAIN