This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 07 April 2020 |
| Upload Date | 03 April 2020 |
| File Name | iPhone_4.0_64bit_13.4.1_17E262_Restore.ipsw |
| File Size | 3.47 GB |
| SHA256sum | 06a3395e07060140505cca00767a8b85533e50a9fa204f5bdb402e8cd0b1d34c |
| MD5sum | 412752d3aba81e4f892a5c1b8bf514ae |
| SHA1sum | d516ad0ce0bc0e081689ff4aabe2e4f3f7a6b19a |
| Identifier | iPhone8,4 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_13.4.1_17E262_Restore.ipsw and press Enter.