Bah, I Jailbroke mine day 1 and have got nice custom screen savers and fonts

, The hacks now have un-install so I can't really see a problem, Unless the OP tried an early version

. If mine had gone tits up I'd have just sent it back, if Amazon played up I'd have just claimed on my credit card

In fact I always make a issue of upgrading my firmware on all my hardware day 1 in case they brick and I just send them back as DOA, Although touch wood I've never had a problem with hacks or upgrading firmware, As long as you read through the instructions a few times you should be ok, I'm pretty obsessive about reading instructions numerous times