Download iOS 12.5 (16H20) 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 12.5
Release Date 2020-12-14
Update Date 2020-12-11
Sha1sum
2138cde9e348f08cca562500eed153ce1f5bfeb3
Sha256sum
d210c71c434a24ff7dc7816082c9bbb434908e783d8379737e53823c03044d66
md5sum
89767e26cff6f426a263f488c89c0155
Size 2.81 GB
FileName
iPhone_4.0_64bit_12.5_16H20_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

iOS 12.5 lets you opt-in to the COVID-19 Exposure Notifications system for your iPhone. System availability depends on support from your local public health authority. For more information see covid19.apple.com/contacttracing

This release also provides 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