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TheSandman2236

macrumors 6502
Original poster
Mar 11, 2008
255
0
Atlanta, GA
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:apple:
 
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

I was able to do it on 10.5 i just fine infact i just pluged in my iphone and hit the restore in itunes when it restored it had 4.2.8 back on it.
 
Putting it into DFU Restore mode instead of DFU worked (the white screen instead of the plug into itunes icon). Just in case anyone has that issue in the future.
 
I successfully downgraded 5.0 beta 2 to 4.2.8 using DFU mode, but I had all kinds of error messages and hanging until I discovered I wasn't actually in DFU mode, just regular recovery mode. I used iTunes 10.3 FWIW.

If you screen has 'connect to iTunes' on it you're in the wrong recovery mode. Furthermore, I don't think you can successfully get to DFU mode when it has that screen so you'll have to kick yourself out of recovery and start over.
 
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