This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 20 May 2020 | 
| Upload Date | 14 May 2020 | 
| File Name | iPad_Spring_2020_13.5_17F75_Restore.ipsw | 
| File Size | 3.93 GB | 
| SHA256sum | a00d276652f3f78cf2c3e781e74eaf1de58947962f4c63104a9994641730ddcf | 
| MD5sum | f662325e5ba7ea4c019b41e57739f526 | 
| SHA1sum | ac558f7821df91baf2ffed74dd6a6551eaefc401 | 
| Identifier | iPad8,9 | 
cd ~/Downloads.idevicerestore -e iPad_Spring_2020_13.5_17F75_Restore.ipsw and press Enter.