This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 30 September 2019 |
| Upload Date | 28 September 2019 |
| File Name | iPhone_4.0_64bit_13.1.2_17A860_Restore.ipsw |
| File Size | 3.37 GB |
| SHA256sum | 026c11c9ed973db430b61726d7066b562b57adc710ca57b55f703a78cd12da7b |
| MD5sum | c6230f48df93fb9a116d8313e3e9b360 |
| SHA1sum | b1fec4e4cf57cfb16f615aea280e6e78a047c037 |
| Identifier | iPhone8,4 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_13.1.2_17A860_Restore.ipsw and press Enter.