Restoring ipod without updating software
The server sends the confirmation in the form of SHSH blobs, a series of encrypted hashes, which i Tunes then verifies against the requested firmware file.If the hashes check out against the firmware file you are trying to install, i Tunes proceeds with the firmware installation.
Right now, it definitely does not work for going from i OS 6 to anything older, like i OS 5.1.1.
I am now sure I would not upgrade to i Phone 6 or whatever's next if this same kind of restrictions are set in place forcing me to do whatever Apple wants. I know there is are some options under Settings-Reset to wipe the phone; which ones of these and in what order did you do? Did you have to set the phone up as a new phone or anything? Easiest way to do this is to go to Settings - General - Reset - Erase All Contents and Settings. Before all this you have to download firmware you want, google it and you will find it.
After firmware has been installed you restore backup from last sync and you are ready to go. As far as I know, the method madmax_mfp outlines will not always work.
Can I restore my i Phone 4 (i OS 5.1.1) without updating to i OS 6?
i Tunes said it would restore and update to the latest software.
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