This firmware is signed. This means that you can restore to it in iTunes.
Release Date | 10 February 2022 |
Upload Date | 07 February 2022 |
File Name | UniversalMac_12.2.1_21D62_Restore.ipsw |
File Size | 13.17 GB |
SHA256sum | 0f33f36f4d01b022e71f7a3a39fc34b67000109f9ec13762f1a39984cef00a46 |
MD5sum | 85b6a7a2757ceee9a51a487b26cf877d |
SHA1sum | acb57f8af1cd1a62f3d1a5a0010cc18a97ff308f |
Identifier | iMac21,1 |
cd ~/Downloads
.idevicerestore -e UniversalMac_12.2.1_21D62_Restore.ipsw
and press Enter.