iPad iOS Firmware iPad ipsw firmware download that provided by Apple, when you do the relevant operation at your own risk.

iPad Pro (9.7-inch)

iPad Pro (9.7-inch) Type and Models :
  • iPad6,3
    • A1673
  • iPad6,4
    • A1674
    • A1675

The signed firmware that you can restore the file by MFC Software or by iTunes.