Download iOS 8.1.2 (12B440) for iPhone 5s (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 iPhone6,1
iOS Version 8.1.2
Release Date 2014-12-09
Update Date 2014-12-05
Sha1sum
c77e8b3ad0f7a5f043fe60142154d3ae59291ec0
Sha256sum
6d270ac5f4186e6492a6a135e472be4b298e5d826d30e631b26053ca527385a7
md5sum
2f6674308f95167469306e22d609a42f
Size 1.74 GB
FileName
iPhone6,1_8.1.2_12B440_Restore.ipsw
Status

Download IPSW (1.74GB) 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 and addresses a problem where ringtones purchased through the iTunes Store may have been removed from your device. To restore these ringtones, visit itunes.com/restore-tones from your iOS device.

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

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