Download iOS 5.1.1 (9B206) for iPhone 3G[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 iPhone2,1
iOS Version 5.1.1
Release Date 1970-01-01
Update Date 2012-04-27
Sha1sum
2a35ac00cd00c4bc499a971391b99471bf2fdd05
Sha256sum
03962930616fa22eae1e4f96b751ee7ff70b6b0f29bdaeae2743096a7a9455f0
md5sum
38312b9d4da5decce7e6a4f042ac9472
Size 0.67 GB
FileName
iPhone2,1_5.1.1_9B206_Restore.ipsw
Status

Download IPSW (0.67GB) Check device info
Release Notes

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

This update contains improvements and bug fixes, including:

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

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