![]() Search for Product Version, and you'll find a section that looks like the text below. You can open this file with any simple text editor. Open the ist file in the root folder of your backup. Take a copy of your iOS backup before you modify it. We've highlighted the version downgrades that we've tested and know are working below. Patching a backup for an iOS downgrade is pretty straightforward, although it isn't possible to move between just any version. That was unusual because I always got 1 GB left (out of the 5 GB free storage) after doing an iCloud backup on iOS 8. Then, I tried to backup manually and it prompts me that my iCloud account has insufficient space. ![]() How to patch downgrade an iOS backup version Since I upgraded to iOS 9 beta 2, the iCloud backup stopped working for a few days. We describe how the first technique below, and our guide on backup recovery covers the second technique. Pull the data you need from your iTunes or iCloud backup, and import it Patch your backup to make it compatible with the earlier iOS, or What are your options, then? Well, there's two: Trying to restore an iOS beta backup to an older version of iOS ITunes could not restore the iPhone "Renate's iPhone" because the backup was corrupt or not compatible with the iPhone that is being restored. If you try without, you'll see this message: If you find yourself needing to restore a backup from a device with a newer version of iOS than the target device, you'll need to be aware that restoring a newer backup to a downgraded iOS device isn't possible without a few tweaks.
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