This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 18 November 2019 |
| Upload Date | 14 November 2019 |
| File Name | iPhone_4.0_64bit_13.2.3_17B111_Restore.ipsw |
| File Size | 3.42 GB |
| SHA256sum | f87b3dc6437a50bcab5d2cea84985dc91ac2031c24c17390100d181f6822935b |
| MD5sum | a19a3bda6a7b10e2d59ed746f585171c |
| SHA1sum | e7bbbf81decea3414304269037d6b0cd33aaf234 |
| Identifier | iPhone8,4 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_13.2.3_17B111_Restore.ipsw and press Enter.