This firmware is signed. This means that you can restore to it in iTunes.
Release Date | 24 May 2021 |
Upload Date | 12 May 2021 |
File Name | UniversalMac_11.4_20F71_Restore.ipsw |
File Size | 12.97 GB |
SHA256sum | bb92e1404a69d139653354f3ed7554aca2d9aa568a003b8db15f40a9433f3356 |
MD5sum | de3d7f7fc64c5e41800b4a2d9dcadfa6 |
SHA1sum | b46f3a411413078c5235f888971faaafd371091e |
Identifier | MacBookPro17,1 |
cd ~/Downloads
.idevicerestore -e UniversalMac_11.4_20F71_Restore.ipsw
and press Enter.