This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 28 January 2020 |
| Upload Date | 22 January 2020 |
| File Name | iPad_Spring_2019_13.3.1_17D50_Restore.ipsw |
| File Size | 3.77 GB |
| SHA256sum | cd5e28bffa5c6abd01eb3521a16c81772f875a9c0e3a55997d84eb05ef9d548c |
| MD5sum | 47b144dcea8f93bd519a388085ec45ce |
| SHA1sum | a2318ee202ab0d1ae79c60ab13d80fc78cd2fb08 |
| Identifier | iPad11,4 |
cd ~/Downloads.idevicerestore -e iPad_Spring_2019_13.3.1_17D50_Restore.ipsw and press Enter.