Hi, I have an iPhone 4 bought from a canadian Apple Store (factory unlocked). I was running the latest version of 4.0.x and decided I was going to update to 4.1. My phone was jailbroken. I thought I would follow the guide on this site to update to 4.1 with greenpois0n. So I backed-up my jailbroken apps with Aptbackup. I synced the iPhone to iTunes 10.0.1 on my Macbook Pro. Then I hit the update button. It downloaded the update, and then went on to install it. Then it jammed. The iTunes progress bar is stuck at like 99% and the iPhone's progress bar (the one with the black screen and only the white Apple logo) is stuck at about 60-70% through. It is stuck there and won't move. What should I do? I can't seem to find anything on Google.