Download iOS 13.3.1 (17D50) for iPhone XR

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 iPhone11,8
iOS Version 13.3.1
Release Date 2020-01-28
Update Date 2024-06-03
Sha1sum
b176a30b819d0c2754d791eaa371af21bab60f09
Sha256sum
def671154c039b47311957d4d04815616bcee385bb3abeb5c43279f73bf0953a
md5sum
400a9ccd3f2508650f413753f3b655b7
Size 4.20 GB
FileName
iPhone11,8,iPhone12,1_13.3.1_17D50_Restore.ipsw
Status

Download IPSW (4.20GB) Check device info
Release Notes

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

iOS 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