Download iOS 8.1 (12B411) for iPhone 4[S]

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 iPhone4,1
iOS Version 8.1
Release Date 2014-10-20
Update Date 2014-10-15
Sha1sum
c5923462caa9a77a1bd3a3e56058982458ba9d25
Sha256sum
e7945b6efa7b03ea78bbf0d2a13ea30b235749860479c37d50aeb4e4e81c2d63
md5sum
5b032ba7c7682627bfafae5fb43243a5
Size 1.66 GB
FileName
iPhone4,1_8.1_12B411_Restore.ipsw
Status

Download IPSW (1.66GB) Check device info
Release Notes

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

This release includes new features, improvements and bug fixes, including:

Some features may not be available for all countries or all areas.

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

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