Download iOS 10.3.1 (14E304) 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 iPhone8,1
iOS Version 10.3.1
Release Date 2017-04-03
Update Date 2024-06-03
Sha1sum
35c43d880f14f098b398391dbe226dee9c1048fa
Sha256sum
0018b77ed48e103046067ee6cc32cce84590582cbb9495c34c1d58f555b61ea9
md5sum
7ca304502b293efcfc453b58600ddd4b
Size 2.41 GB
FileName
iPhone_4.7_10.3.1_14E304_Restore.ipsw
Status

Download IPSW (2.41GB) 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