I have an iPod touch 3g 32GB running 3.1.2 and I had no problem jailbreaking it with blackra1n nor with installing Cydia. But when I tried to install Winterboard my iPod crashes. So I done a little research and I hoped that I could install Mobile Substrate from Cydia and it would fix my problem but it crashed my iPod as well. By crashing I mean my iPod goes into recovery mode. There may be more programs that does this but I just haven't tried them yet, I don't want to keep restoring my iPod. Please if anyone has any suggestion I would greatly appreciate to try them. Thanks!