I got my iPod Touch replaced because it wouldn't power on, but it came with 2.2.1 on it. I'd like to upgrade to 3.0 and jailbreak. I've already purchased 3.0 awhile back for $10, but when I upgraded to iTunes 9 it erased all my previous software upgrades. iTunes gives me the option to upgrade for free since I've already purchased it, but to 3.1.1. How can I upgrade to just 3.0 legally?