Download iOS 14.3 (18C66) for iPhone 11 Pro Max

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 iPhone12,5
iOS Version 14.3
Release Date 2020-12-14
Update Date 2024-06-03
Sha1sum
2938954dd34ecdd9aab2d10bae05524a3b634f4b
Sha256sum
cd08c22a4cc2e234b9fabd1dcd6e752b5eb689cad6afef0b8e44e2861cbaeed2
md5sum
2087e626b6f7de85d1848adec262bb3c
Size 5.92 GB
FileName
iPhone11,2,iPhone11,4,iPhone11,6,iPhone12,3,iPhone12,5_14.3_18C66_Restore.ipsw
Status

Download IPSW (5.92GB) 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