Download iOS 10.3.1 (14E304) for iPhone 7 (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 iPhone9,3
iOS Version 10.3.1
Release Date 2017-04-03
Update Date 2017-04-01
Sha1sum
f493e71662f77875b16d7c1805e6f38f50dca989
Sha256sum
53716781771e5b43d5380f97533ba198965ea01b95f8733812bf80b2ed31e7df
md5sum
fb1c8b586916d06c6440206913610d57
Size 2.39 GB
FileName
iPhone_7_10.3.1_14E304_Restore.ipsw
Status

Download IPSW (2.39GB) Check device info
Release Notes

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

iOS 10.3.1 includes bug fixes and improves the security of your iPhone or iPad.

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

https://support.apple.com/HT201222