I need some help here because I've spent 2 hours reading everything on the net about unlocking and jailbreaking and I am so confused about somethings. I am running 3.1.2 (7D11) and Modem Firmware 05.11.07 right now. My iPhone 3G was jailbroken with blackra1n after I upgraded my software to 3.1.2. I then followed some instructions on the internet and tried to unlock my phone. I ran the blackra1n app on my iPhone, clicked on sn0w to install it....and now apparently my iPhone is unlocked after 5 seconds. I would never be able to check until I find someone with a different carrier SIM card. Anyway, what I want know is, if I upgrade to 3.1.3 through iTunes.....I am guessing I will lose the jailbreak? But will I lose the unlock as well? Will the 3.1.3 upgrade change my modem firmware to something newer that blocks any unlocking? (As far as I can find, there is no unlocking with any baseband that is newer than 05.11.07.) If I just hit 'Restore' and not 'Update' in iTunes right now, am I just losing the jailbreak but it will still be unlocked? Or will iTunes upgrade my baseband in the background?