Download iOS 14.3 (18C66) 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 14.3
Release Date 2020-12-14
Update Date 2024-06-03
Sha1sum
b4ba7ccad716409e8151cae9743cfb78c59eb753
Sha256sum
c691b8a5054b9b40c76c219d6a81e149f8a6375fda1e1269506215dc17b69158
md5sum
c88c3cc590c1b39c26a1703cf56c673a
Size 5.35 GB
FileName
iPhone11,8,iPhone12,1_14.3_18C66_Restore.ipsw
Status

Download IPSW (5.35GB) Check device info
Release Notes

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

iOS 14.3 includes support for Apple Fitness+ and AirPods Max. This release also adds the ability to capture photos in Apple ProRAW on iPhone 12 Pro, introduces Privacy information on the App Store, and includes other features and bug fixes for your iPhone.

Apple Fitness+

AirPods Max

Photos

Privacy

TV app

App Clips

Health

Weather

Safari

This release also addresses the following issues:

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website:

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