This firmware is signed. This means that you can restore to it in iTunes.
Release Date | 07 April 2023 |
Upload Date | 03 April 2023 |
File Name | UniversalMac_13.3.1_22E261_Restore.ipsw |
File Size | 11.85 GB |
SHA256sum | 6e9d9b30528ec951d8a377173b355932647194c326347efc5e54ade1fe71cbc8 |
MD5sum | 238108a4bf8e47b387af0d784680c370 |
SHA1sum | e8e862f31c6390f5d66c37139dc84493639e14d0 |
Identifier | MacBookPro18,3 |
cd ~/Downloads
.idevicerestore -e UniversalMac_13.3.1_22E261_Restore.ipsw
and press Enter.