This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 24 March 2020 | 
| Upload Date | 11 March 2020 | 
| File Name | iPad_Spring_2020_13.4_17E255_Restore.ipsw | 
| File Size | 3.88 GB | 
| SHA256sum | 592d2e76a285a764ba8f200edb6f56e300b05d74f51e77198df84218f70f47bf | 
| MD5sum | 8a91ae8101931a635e267bae6517a33a | 
| SHA1sum | dc98b518323e4c9c9a91ddc7fdccc048a9bc05fe | 
| Identifier | iPad8,9 | 
cd ~/Downloads.idevicerestore -e iPad_Spring_2020_13.4_17E255_Restore.ipsw and press Enter.