I have an iPhone (v1.1.1) that has been jailbreaked (using jailbreakme.com) and unlocked (using anySIM v1.1). I was not able to get a prepaid SIM card to work in the UK when I was traveling last month, so at this point, I just want to restore my phone back to the way it was before jailbreaking and unlocking. Is there a way to do this, without losing all my SMS messages, settings, etc.? I've looked here and done a Google search, but I can't seem to find the answer. All I find is how to jailbreak 1.1.2 (which I don't necessarily want to do). I am located in the US and have an AT&T SIM card and contract. If I do a restore in iTunes 7.5, will this break my iPhone? Or, can I just upgrade to the 1.1.2 firmware to basically un-jailbreak and un-unlock my iPhone? Thanks!