This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 29 March 2018 | 
| Upload Date | 16 March 2018 | 
| File Name | iPad_Pro_HFR_11.3_15E216_Restore.ipsw | 
| File Size | 2.59 GB | 
| SHA256sum | 1ef5ec2c27ba8d064c52fab920eada8f2ffe424142dcc24ac6ccda1e97ad7d34 | 
| MD5sum | de5135b9dff91de0473f73b5aefa0ce7 | 
| SHA1sum | 6f849f89be9085d349603338422eb0684f3b3904 | 
| Identifier | iPad7,2 | 
cd ~/Downloads.idevicerestore -e iPad_Pro_HFR_11.3_15E216_Restore.ipsw and press Enter.