K770i unlock - which firmware?

[riders4sia]

if you don't have qamaker, download it from the attachment, extract it anywhere you like. now open the qamaker folder that you have just extracted, drag and drop your mbn file over the qamaker.exe, a file will be created in the qamaker folder. start setool2lite, select phone model (K790), tick the bypass db2020security, click the add button, select the mbn file and click open, now click on the misc... and select the file that qamaker created it (1st step) and click open, now click the flash button and follow the onscreen command