Download iOS 13.5.1 (17F80) for iPhone 8 (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 iPhone10,4
iOS Version 13.5.1
Release Date 2020-06-01
Update Date 2024-06-03
Sha1sum
bf7dead7f0dcba01f7777cd88ec3a7c4e5cb8676
Sha256sum
93099c75860a44f6526cf0af7ece61caf41c56b1cadbfc5c2ff2c876e2df2abf
md5sum
22f59bb4ae67f801965699d205a50e87
Size 3.80 GB
FileName
iPhone_4.7_P3_13.5.1_17F80_Restore.ipsw
Status

Download IPSW (3.80GB) Check device info
Release Notes

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

iOS 13.5.1 provides important security updates and is recommended for all users.

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website:

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