Download iOS 12.3.1 (16F203) for iPhone XS 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 iPhone11,6
iOS Version 12.3.1
Release Date 2019-05-24
Update Date 2024-06-03
Sha1sum
359a5649644f155e7425039b90ed431732108bac
Sha256sum
75dd4765feba971b50a8f3849293a2c2d9552aba3ac23ec3511cd1ff4bd03873
md5sum
159ba5dd5f4e06dc9552a0d6d9f16784
Size 3.41 GB
FileName
iPhone11,4,iPhone11,6_12.3.1_16F203_Restore.ipsw
Status

Download IPSW (3.41GB) Check device info
Release Notes

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

iOS 12 brings performance improvements and exciting new features to iPhone and iPad. Photos introduces new features to help you rediscover and share the photos in your library, Memoji—a new, more customizable Animoji—make Messages more expressive and fun, Screen Time helps you and your family understand and make the most of the time spent on devices, Siri Shortcuts deliver a faster way to get things done with the ability for any app to work with Siri, augmented reality becomes even more engaging with the ability for developers to create shared AR experiences, and new privacy features help protect you from being tracked on the web. This update introduces new features and improvements to:

Performance

Photos

Camera

Messages

Screen Time

Do Not Disturb

Notifications

Siri

Augmented Reality

Measure

Privacy and Security

Apple Books

Apple Music

Apple News

Stocks

Voice Memos

TV

Apple Podcasts

Accessibility

Other features and improvements

* Testing conducted by Apple in May 2018 using iPhone 6 Plus supporting normal peak performance, prerelease iOS 11.4, and prerelease iOS 12. Keyboard tested using Safari; Camera tested by swiping from the Lock screen. Performance varies based on specific configuration, content, battery health, usage, software versions, and other factors.

Some features may not be available for all countries or all areas, for more information visit: https://www.apple.com/ios/feature-availability and https://www.apple.com/ios/whats-new

For information on the security content of this update, please visit this website:

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