Download iOS 10.3 (14E277) for iPhone 6s+

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 iPhone8,2
iOS Version 10.3
Release Date 2017-03-27
Update Date 2017-03-20
Sha1sum
f8d1bc188108b36bae88c8d11a6c2ff0a5bdf301
Sha256sum
4841b47c5d8a8f888bb4f93fc99ddbad6ae456aa3b366668d883f4c88de8d603
md5sum
6c8343bff833a98f670031ccea653038
Size 2.58 GB
FileName
iPhone_5.5_10.3_14E277_Restore.ipsw
Status

Download IPSW (2.58GB) Check device info
Release Notes

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

iOS 10.3 introduces new features including the ability to locate AirPods using Find my iPhone and more ways to use Siri with payment, ride booking and automaker apps.

Find My iPhone

Siri

CarPlay

Other improvements and fixes

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

https://support.apple.com/HT201222