exactly the same problem as Proper wrote.

"Hi I have iPod Touch 2G software version 3.1.2, the model name starts with MC, and I can't make jailbreak in any way. After blackra1n iPod doesn't boot and re-runing blackra1n doesn't work. Tried milion times. Also it can't be restored by custom firmware created by pwnage tool 3.1.4, because error 1600 or 1601 or 1604 comes up. ALSO i can't downgrade to 3.0 to use redsn0w because error 1600, 1601, 1604 comes up! This iPod has never been jailbroken, I've been jailbreaking for many times and many devices and I have never had such a problem, tried iTunes 8 and 9. And one more thing, I don't exactly know which firmware version it had out of the box, becaue it's not my iPod but I suppose 3.0 or 3.1 Please, answer me maybe it't that issue dev-team has written it about "(we’ll update this if there’s a big demand from non-jailbroken ipt2G owners)" "

Please make something!