Download iPadOS 13.3.1 (17D50) for iPad Pro 12.9-inch (Cellular)

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

❌ This IPSW firmware is not being Signed by Apple

Firmware Identifier iPad6,8
iPadOS Version 13.3.1
Release Date 2020-01-28
Update Date 2024-06-03
Sha1sum
bac811cab5013884b9b6460e2b00f8dc029feb3c
Sha256sum
f79d1a4b5ad4638c197ea150c46fbb211def4b8748858597c650a574cfdbc18d
md5sum
2bba301b449952e0f1472dc0b1c7e281
Size 3.53 GB
FileName
iPadPro_12.9_13.3.1_17D50_Restore.ipsw
Status

Download IPSW (3.53GB) Check device info
Release Notes

It should be noted that these are the official release notes for the from Apple

iPadOS 13.3.1 includes bug fixes and improvements. This update:

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222