This firmware is signed. This means that you can restore to it in iTunes.
| Release Date | 18 May 2023 |
| Upload Date | 13 May 2023 |
| File Name | UniversalMac_13.4_22F66_Restore.ipsw |
| File Size | 11.87 GB |
| SHA256sum | 472192932e4152d20d0504641df4c8574929903f2f3244f45b46af7d5b2e4606 |
| MD5sum | aa8e6e06a09d631432d91d2de324c47b |
| SHA1sum | 7d7d939fe872fad8fd4c77ba8f2cfdc255a65010 |
| Identifier | Mac14,2 |
cd ~/Downloads.idevicerestore -e UniversalMac_13.4_22F66_Restore.ipsw and press Enter.