This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 10 February 2022 |
| Upload Date | 07 February 2022 |
| File Name | iPad_Pro_Spring_2021_15.3.1_19D52_Restore.ipsw |
| File Size | 5.94 GB |
| SHA256sum | 9a38b2ff080ef67f4df4a66191cc5864a419686048eba9c0a315fb81e9f32047 |
| MD5sum | 98a12538bd706da8dd8ae370d8ace371 |
| SHA1sum | 233c790c21d888883adb838720a46fd617ea9248 |
| Identifier | iPad13,5 |
cd ~/Downloads.idevicerestore -e iPad_Pro_Spring_2021_15.3.1_19D52_Restore.ipsw and press Enter.