Download iOS 8.3 (12F70) for iPhone 5 (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 iPhone5,1
iOS Version 8.3
Release Date 2015-04-08
Update Date 2015-04-04
Sha1sum
56e4753e5850942a2090f29dfc72972704efffac
Sha256sum
2e48fd6c5a4ba5b16ee4634458d61ed970cff9bd0b56fbaf6efc07ffa305ff2e
md5sum
38dd2ac5b5ad53741c028e570814efd0
Size 1.53 GB
FileName
iPhone5,1_8.3_12F70_Restore.ipsw
Status

Download IPSW (1.53GB) Check device info
Release Notes

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

This release includes improved performance, bug fixes, and a redesigned Emoji keyboard. Changes include:

Improved performance for:

Wi-Fi and Bluetooth fixes

Orientation and rotation fixes

Messages fixes

Family Sharing fixes

CarPlay fixes

Enterprise fixes

Accessibility fixes

Other improvements and bug fixes

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

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