This firmware is not signed. This means you cannot restore to it in iTunes.
Release Date | 10 February 2022 |
Upload Date | 07 February 2022 |
File Name | iPhone13,4_15.3.1_19D52_Restore.ipsw |
File Size | 6.19 GB |
SHA256sum | 0854c7e389f58a14232cabdae01a2229c35ee1d80337b0f3ddabda3f5bd8f922 |
MD5sum | 3860e594127ccd0dd6715c20f540f36c |
SHA1sum | 7247fdfbf5a1f45c70396abc0403834585ec4268 |
Identifier | iPhone13,4 |
cd ~/Downloads
.idevicerestore -e iPhone13,4_15.3.1_19D52_Restore.ipsw
and press Enter.