Well at first I played around with anySIM, the 'free solution'. Unconsciously I updated to 1.1.1 and i have an iBrick.
2 weeks later iPhonesimfree released their 'paid solution' for 1.1.1 firmware and was supposedly able to fix the bricking of the phone i.e. the baseband firmware. So i shell out the $60 and now I'm happy again.
It wasn't difficult at all, just follow the instructions on their website and you're on. I think their method of unlocking is kinda "official" because they need your imei for the program to work, and during the process the phone i think the phone sends the information to their server in order for the unlock to be complete.