iPad ipsw firmware download that provided by Apple, when you do the relevant operation at your own risk.
A2072 / A2316 / A2324 / A2325
18B92 · iPad13,1 / iPad13,2
18A8395 · iPad13,1 / iPad13,2
18A393 · iPad13,1 / iPad13,2
18A373 · iPad13,1 / iPad13,2