Hi everyone. Given the circumstances, I'm pretty sure the answer will be no, but i had to try.
Right yesterday i bought a second hand N900 (without seeing it first, very bad idea) which has no proof of purchase: no receipt, no warranty certificate, no original package, no nothing, i bought it from a friend of a friend who wanted the money to buy an iphone, or something like that. Since i wanted to retire my N95, it sounded a good oportunity. This morning, when i got it and turned on, It had the red striped SIM card icon (if the info helps, i live in Brasil). Talked to the guy, he said it was OK before giving it to me and that probably it was SIM locked. I searched google, ended up here, read about flashing and done it. After all the process went fine (at least i recognized no errors), the phone reboted and what i've got is a "Enter lock code screen". Called the guy again, he said he fogot to told me about that and that forgot the code he had inserted, tried the default nokia lock code (which was incorrect, obviously) and now i'm completely stuck in this screen.

All that said, questions are:
1) Is this thread the right place to this question, anyway?
2) Considering mine and phone's situation, would you guys helping me?

Thanks in advance and thanks whatever the answer is.