DCT4 dongle I can build myself?

[windexwindex]

I'm looking for dongle schematics, something I can use to unlock (or maybe flash) a Nokia 3120b. All I have is two F/Mbus cables, but there seems to be no way to unlock with these cables. Maybe I can use some parts from one of these cables to build a dongle? Any help appreciated, thanks

[mestrini]

try to search for dejan's cheap flasher but be aware that it might need patched files to upload to phone...