Download iOS 15.3 (19D50) 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 15.3
Release Date 2022-01-26
Update Date 2024-06-03
Sha1sum
a0231f24de0b2e2fad7d744131130a86a45c2fde
Sha256sum
83bd1910710ab202efa2ae10964a046424e92f9b435009ae009098240c2dfc55
md5sum
e73042bffcd508448fd6a939fd73813e
Size 6.50 GB
FileName
iPhone11,8,iPhone12,1_15.3_19D50_Restore.ipsw
Status

Download IPSW (6.50GB) Check device info
Release Notes

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

iOS 15.3 includes bug fixes and security updates for your iPhone and is recommended for all users.

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

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