I have an iCloud backup from an iPhone running iOS 8.3. Now, I'd like to restore another iPhone from this backup. The problem is that the other iPhone is running iOS 8.2 (this iPhone cannot be updated to 8.3 as I need it to run this very version).
I found some guides on the internet explaining how to do a downgrade from a beta version (I didn't find anything about downgrading from non-beta versions). But they are about downgrading from a major release to another major release (eg: iOS 8 to iOS 7).
My thought is that, unlike the iTunes backup, iCloud backup saves only information about the data on your iPhone (a list of all installed apps, a list of all downloaded music, movies, etc.) and when you restore from an iCloud backup, it will just re-download this media from iTunes and the App Store.
I didn't just try this yet as I don't know whether some data in iCloud may get corrupted by restoring to an older version.
Does anybody have any experience with this kind of thing?