✓ This firmware is signed. This means that you can restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | March 31, 2022 |
|---|---|
| Upload Date | March 26, 2022 |
| Filename | UniversalMac_12.3.1_21E258_Restore.ipsw |
| Filesize | 13 GiB |
| SHA256sum | cb0443525571ea5e54aa5a8fd9c52774591892311405183741f4a02f993e18d5 |
| MD5sum | 6c943a751207e9e06ab018a7bb568d40 |
| SHA1sum | 81033c922c5d43f57907d063fb01865f4c856b37 |
| Identifier | iMac21,1 |