Download iOS 10.3 (14E277) for iPhone 5s (GSM)

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 iPhone6,1
iOS Version 10.3
Release Date 2017-03-27
Update Date 2017-03-20
Sha1sum
ba0a738b8213f64c6a01e8da1e8473c5501fd0c9
Sha256sum
12f99f4cc47fc31360be972805beca88de1bd59f23ab8ebb42de7816d6072dab
md5sum
4ad25b30e9d6645d27cc74bf91fd1c4c
Size 2.34 GB
FileName
iPhone_4.0_64bit_10.3_14E277_Restore.ipsw
Status

Download IPSW (2.34GB) 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