This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 12 September 2022 |
| Upload Date | 30 August 2022 |
| File Name | iPhone_4.0_64bit_15.7_19H12_Restore.ipsw |
| File Size | 4.88 GB |
| SHA256sum | d68bb95de88d1f3622f754fdce2b967bc4bc008699019e231207a9012990e22c |
| MD5sum | db7ae13f5201e9225577ebe81e6a78e8 |
| SHA1sum | 79051fb9410f6d3da1ed85309ae155fc6bd095f7 |
| Identifier | iPhone8,4 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_15.7_19H12_Restore.ipsw and press Enter.