Download iOS 9.2.1 (13D15) 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 9.2.1
Release Date 2016-01-19
Update Date 2016-01-12
Sha1sum
7f729eee30f7c1fb0d2c2f0d89523bd1bc87ed5d
Sha256sum
2d6ae664991f801ae9680d821b3c6136b9c713cff33f73b7404676203562b536
md5sum
81ae0017e005df8619d8c77270729006
Size 2.05 GB
FileName
iPhone7,1_9.2.1_13D15_Restore.ipsw
Status

Download IPSW (2.05GB) Check device info
Release Notes

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

This update contains security updates and bug fixes including a fix for an issue that could prevent the completion of app installation when using an MDM server.

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

https://support.apple.com/HT201222