Download iOS 8.1.1 (12B436) 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 8.1.1
Release Date 2014-11-17
Update Date 2014-11-11
Sha1sum
e306dba340188c167efd719780bcf42d129cd161
Sha256sum
1fef614ade2843b9b10c46d5a216980b5ee2fb2c0984f4a2bf4340fdea58b588
md5sum
b7cf5dac1e373d2a52e0d4fa098f6e7a
Size 2.05 GB
FileName
iPhone7,1_8.1.1_12B436_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 release includes bug fixes, increased stability and performance improvements for iPad 2 and iPhone 4s.

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

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