Remember, you can't fill in more than 90 days, because there is no longer that "time machine" available there. ![]() you just need to subtract Dec 8th from the current date to calculate the date you need to go back to, for today, I need to go back 7 days ago, so I fill in 7 days in the profile below. This post was made on Dec 7th, I'm assuming 15.7.2 RC is available that day (to be on the safe side, I recommend going back to Dec 8th, not Dec 7th, because you may be back too early and it hasn't been released yet on Dec 7th (like in the morning)). It's like a time machine, you need to go back to a time when it was still available, not too early, not too late, so the time window is the key. In essence, the delayed OTA profile is a plain text file, you only need to edit the date to delay the date, but not too early, because that version hasn't been released by then and you'll just get older versions like 15.7.1 or 15.7, but not too late, or it will stop signing. View attachment 2128474Ĭlick to expand.The delayed OTA has a time window, and its time window is a maximum of 90 days from the date when it is no longer signed to still be able to upgrade to that version. I'll try the delayed OTA later this/next week, as iOS 15 is already the best deal for the iPhone 11. the iPhone 8 can't, but at the time of the public release, a reddit user said that successfully saved 15.7.2 blobs for iPhone 8, I think at that time they forgot to unsign. It looks like Apple's updates have been pretty messed up, and it may have been a last-minute decision to ban iPhone 8 and later devices from continuing to get iOS 15.Īs we all know, the iPhone 7 series and the iPhone 8 series have always shared the same firmware, and the iPhone 7 cannot be upgraded to iOS 16, so it can get iOS 15.7.2. ![]() This is the error I got when trying to upgrade my iPhone 11 from iOS 15.7.1 (final) to 15.7.2 (RC using beta profile), which happened because 15.7.2 OTA is no longer signed. ![]() Once you've upgraded to iOS 15.7.2 you can wipe the device out of supervised mode, then go back to your backup. There's actually one more way out there to get anyone stuck on iOS 15 to upgrade to iOS 15.7.2, and that is the Delayed OTA.īut for non-jailbroken devices, you need to use Apple configurator 2 (for macOS) or the paid version of iMazing (for Windows) to put your iPhone into supervised mode, and then with delayed OTA and Beta profiles, you should be able to upgrade to 15.7.2 from any 15.x.įor putting iOS into supervised mode, you'll be asked to wipe the device during the process, so create a backup before doing so.
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