An important courtesy reminder for thejailbreakcommunity: Sunday, March 13that 00:00 P.M. UTC (7:00 P.M. EST) is the hard deadline for using theDelayOTAmethod to upgrade to the unsigned iOS or iPadOS 15.1 or 15.1.1 firmware.
Because these versions are already unsigned, you can’t upgrade to them normally. DelayOTA grants a 90-day grace period post-unsigning with Supervised mode, and that’s what is set to expire at the aforementioned date and time.

For details about how you can use DelayOTA, you may refer to whichever of the guides below applies to you (depending on whether you are or aren’t jailbroken):
With thereleaseof an iOS & iPadOS 15.0-15.1.1-supported exploit, jailbreak developers havestarted investigatingthe feasibility of developing a jailbreak around it. This has left many prospective jailbreakers wondering if they should jump to the latest supported firmware.
While we can’t make this decision for you, here’s some advice:
With the above considerations aside, be sure to take advantage of the remaining hours to use DelayOTA to get in iOS or iPadOS 15.1 or 15.1.1 before it’s too late, unless you’ve decided not to.
Please note that some newer devices, especially those equipped with A14 chips, may not work when attempting DelayOTA. This is due to a problem commonly referred to as the ‘A14 Curse.’ These devices must instead use the futurerestore method, which requires saved SHSH blobs.
For more information about the deadlines for DelayOTA firmware upgrades, head over toDhinakg’s Delayed OTA profile website.
Have you upgraded to iOS or iPadOS 15.1 or 15.1.1 using either DelayOTA or futurerestore yet? Be sure to let us know in the comments section down below.