2049 Views 4 Replies Latest reply: Dec 16, 2010 6:20 AM by diesel vdub
Please Apple, can you give me a solution on how to fully restore my iPhone 3GS to 4.2 from 4.1 without any issues?
1) You are not addressing Apple here. This is a peer-to-peer forum.
2) There is no official way to revert to a previous version of the iOS.
Restoring will only restore the backup of your data on the most current version of iOS. The backup does not include the iOS.
I think diesel vdub has misunderstood - you are trying to upgrade from 4.1 to 4.2 not downgrade unofficially. The best way to upgrade is to put your phone into DFU mode and restore the firmware that way. Then after it is done, restore from a backup. A nice instructional video can be found here http://www.youtube.com/watch?v=ofpinyGlQ8I