Download iOS 12.4.9 (16H5) for iPhone 5s (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 iPhone6,1
iOS Version 12.4.9
Release Date 2020-11-05
Update Date 2020-10-30
Sha1sum
96edb4221812d14092a5208f5c0a8a67ef6f4bdb
Sha256sum
cc4afa9fea7681766b397d1c2f1d06e5b4c5aeaccf83b29c0c72b4bf60afa481
md5sum
2cc9279bf24f015e06bf51b67a11c09d
Size 2.81 GB
FileName
iPhone_4.0_64bit_12.4.9_16H5_Restore.ipsw
Status

Download IPSW (2.81GB) Check device info
Release Notes

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

This update provides important security updates and is recommended for all users.

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

https://support.apple.com/kb/HT201222