Download iOS 12.5.8 (16H88) for iPhone 6+

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

✅ This IPSW firmware is Signed

Firmware Identifier iPhone7,1
iOS Version 12.5.8
Release Date 2026-01-26
Update Date 2026-01-22
Sha1sum
2e1341e2ced0205fa73dc13e676ec3a680e946e9
Sha256sum
2fffa7ea14ff3ebbac6db8e3589a31f387a45b9ef2f2387767a529f62c122b74
md5sum
7121e33fd451b68fddd45cce4e86f64a
Size 2.97 GB
FileName
iPhone_5.5_12.5.8_16H88_Restore.ipsw
Status

Download IPSW (2.97GB) Check device info
Release Notes

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

This update extends the certificate required by features such as iMessage, FaceTime, and device activation to continue working after January 2027.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/100100

IPSW File Download FAQ