Update July 9, 3:28 p.m. ET: As Aaron Perris noted on X, Apple has resumed signing the iOS versions listed in this article. As a result, owners of the affected legacy iPhone and iPad models can once again restore to those software versions, most of which are the latest releases compatible with their respective devices. The original story follows below. iPhone and iPad users hanging on to older devices will no longer be able to restore or downgrade to several older iOS versions starting today. Here are the details.