✓ This firmware is signed. This means that you can restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
| Release Date | December 13, 2021 |
|---|---|
| Upload Date | December 8, 2021 |
| Filename | UniversalMac_12.1_21C52_Restore.ipsw |
| Filesize | 13 GiB |
| SHA256sum | 8d3863cd4a09d5cfd75c4a3e61f7605d800f653b5ecd6e8628b19a44de6a67b0 |
| MD5sum | f372884892c445b80993250b65f6bebb |
| SHA1sum | 04421498d4e6e031f2269c988a2663ebacb774e4 |
| Identifier | MacBookPro17,1 |