Download iOS 15.1.1 and iPadOS 15.1.1 IPSW files for all iPhones
You can download iOS 15.1.1 and iPadOS 15.1.1 IPSW files for all iPhones from this page. All firmware links are provided from the Apple server using the ipsw.me API. Note that the firmware here can only be restored with iTunes or 3utools if they are still being signed. You will get to see firmware status and know if they are signed or not.
iOS 15.1.1 improves call drop performance on iPhone 12 and iPhone 13 models.
