Remember that you will not keep your jailbreak on the new firmware if you are currently jailbroken. In order to perform an upgrade using Delay OTA please follow the instructions below carefully. How to upgrade to an unsigned iOS version using Delay OTA? Any remaining jailbreak files will carry over to the new non-jailbroken firmware and you will not You must restore ROOT FS / Unjailbreak your device before attempting to Delay OTA.Apple can pull an OTA build earlier than the default 3 months window, but that’s uncommon. In fact, you can consult the dates below to see exactly when each version will expire. Even OTAs available through this method expire eventually. The iOS version you try to install via Delay OTA must still be in the available timeframe.You can also build your own profile if needed. You can do this by installing a custom supervision profile that puts your device in Supervised mode. Your device must be in Supervised mode.You cannot use Delay OTA to downgrade, just to upgrade. You must be on a lower iOS version than the one you try to Delay OTA to.In order to be able to fully perform an upgrade using Delay OTA, you need to meet the following prerequisites: What are the minimum requirements for Delay OTA? These are available so that Enterprise users have a longer time to apply patches and security updates, get their in-house apps to work with the new changes, etc. The way these upgrades work is by using Provisioning Profiles intended for the Enterprise segment. With this method, you usually have about 3 months to update to an iOS version once it stops being signed. In a nutshell, Delay OTA profiles allow you to upgrade to a particular iOS version that is no longer signed by Apple for the general public, long after the iOS version stopped being signed. If you want to downgrade/upgrade your iOS device to a certain jailbreakable version you probably heard of iOS Delay OTA (also known as DelayOTA or OTADelay in the community) before.
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