You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.
❌ This IPSW firmware is not being Signed by Apple
| Firmware Identifier | iPhone14,2 |
|---|---|
| iOS Version | 15.1.1 |
| Release Date | 2021-11-17 |
| Update Date | 2021-11-12 |
| Sha1sum |
82493f2ba07b05b169c7ab5c5e9be27a3b02dc7b
|
| Sha256sum |
8166864ab3348c86f29ee2e5ff14b53c29cfd333341e89f622ac4a3fac10040c
|
| md5sum |
aaafacabe3ba0441b3dcb67327281ee3
|
| Size | 6.14 GB |
| FileName |
iPhone14,2_15.1.1_19B81_Restore.ipsw
|
| Status |
|
It should be noted that these are the official release notes for the = $os ?> = $version ?> from Apple
iOS 15.1.1 improves call drop performance on iPhone 12 and iPhone 13 models.