I was curious if anyone has successfully done this, I keep trying to go back to 4.2.8 and get the 1603 error -- I then have to restore back to iOS 5. Any recommendations?
Thanks!
Chris
Thanks!
Chris

i did it fine. i actually just option-restored it via my custom jb ipsw.
Are you on a mac or pc, and which version of iTunes did you use to restore?
Thanks!
I did it quite easily using iTunes 10.3.
I believe you can't do it with 10.5
and I am on a PC running vista business
Are you on a mac or pc, and which version of iTunes did you use to restore?
Thanks!