This firmware is signed. This means that you can restore to it in iTunes.
Release Date | 08 March 2021 |
Upload Date | 03 March 2021 |
File Name | UniversalMac_11.2.3_20D91_Restore.ipsw |
File Size | 12.77 GB |
SHA256sum | 3873efdc08c71af06b8d5ad1d2fda0d509746cc29e568e90732ccbe614af5a9f |
MD5sum | 21c98b937bce0285abde8b39d1069409 |
SHA1sum | 47409e45ec6d9b6a15d9a49563572914f222104e |
Identifier | MacBookPro17,1 |
cd ~/Downloads
.idevicerestore -e UniversalMac_11.2.3_20D91_Restore.ipsw
and press Enter.