Download iOS 9.3.1 (13E238) for iPhone 6+

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 iPhone7,1
iOS Version 9.3.1
Release Date 2016-03-31
Update Date 2016-03-30
Sha1sum
e1caf22a6622cff140e0500573b1e60f7a29ccf2
Sha256sum
1b33901cbc89788a68ed7b9cdd31446625860f96abde45e4b74fe9f02f97aa43
md5sum
a271cc07eab983c93864407a4cee238a
Size 2.08 GB
FileName
iPhone7,1_9.3.1_13E238_Restore.ipsw
Status

Download IPSW (2.08GB) Check device info
Release Notes

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

Fixes an issue that caused apps to be unresponsive after tapping on links in Safari and other apps

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

http://support.apple.com/kb/HT1222