I have thoroughly searched the forums to find many threads complaining of error 1403. Yet none of the threads had a reply on how to fix this error. Problem: I'm at the FINAL STEP (woo hoo!) and I click Shift + Left Click on the "Restore botton" and choose my 284MB IPSW File. iTunes gets about half way through extracting software when error 1403 stops it. I really don't know what the problem is. Please anyone help me!