How to update non-jailbroken iPhones & iPads to unsigned firmware with DelayOTA

It’s not uncommon for people to lose their jailbreaks, and as we always say, those who aren’t jailbroken should always stay on the lowest possible firmware to ensure jailbreak eligibility. This is good in practice, but sometimes jailbreaks drop for newer versions of iOS or iPadOS than what you’re currently running, and when Apple stops signing that newer firmware, you might not be able to update to it before jailbreaking.