Download iOS 8.1.3 (12B466) for iPhone 5c (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 iPhone5,3
iOS Version 8.1.3
Release Date 2015-01-27
Update Date 2015-01-19
Sha1sum
a562e6527cf18ef50e5f5b1626514670e64e1abc
Sha256sum
a704d4745f47bb592b85c1e320eb4544de8a50524aeb39134e7dc23b387dbf78
md5sum
7472d35006c2eec000d93e3ed82e7c61
Size 1.50 GB
FileName
iPhone5,3_8.1.3_12B466_Restore.ipsw
Status

Download IPSW (1.50GB) 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, including:

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

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