well im about to JB my 3g but i notice that on the website link that you posted it said
Important***: Do not attempt these instructions for the 2.2 iPhone Firmware unless you don't care about a software unlock in the future. Using QuickPwn with the 2.2 iPhone Firmware could reduce your chances of being able to unlock the iPhone 3G.
hmm what are they trying to say? well my phone just lock up and i wont be able to use it will i not be able to do a full restore on my phone if needed to be brought back to apple for a check up? will i not be able to update to a new firmwear and then JB again ?
can i get some answers?