Download iOS 17.6.1 (21G101) for iPhone 15

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 iPhone15,4
iOS Version 17.6.1
Release Date 2024-08-19
Update Date 2024-08-17
Sha1sum
0343bbf84ae44377fd6d750ac61707d27bb1c4c0
Sha256sum
331f043f07500a60eed5317b7515b8a2c15adf338d4ec8574d19a882563ed259
md5sum
0b7026094502bf7cee143015d49893e6
Size 7.53 GB
FileName
iPhone15,4_17.6.1_21G101_Restore.ipsw
Status

Download IPSW (7.53GB) Check device info
Release Notes

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

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Apple Podcasts

This update includes the following enhancements and bug fixes:

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

IPSW File Download FAQ