This firmware is not signed. This means you cannot restore to it in iTunes.
Release Date | 19 December 2023 |
Upload Date | 16 December 2023 |
File Name | iPhone15,3_17.2.1_21C66_Restore.ipsw |
File Size | 7.36 GB |
SHA256sum | 956f4a84ba1de91e9fdb8c4c3f6f2ad5adbefcc4217be62f67a889381258379a |
MD5sum | ad77a9838c94d25fe94c3382d8d319e4 |
SHA1sum | 636870f78995cb5aacd98a6e32f49b03c4035860 |
Identifier | iPhone15,3 |
cd ~/Downloads
.idevicerestore -e iPhone15,3_17.2.1_21C66_Restore.ipsw
and press Enter.