Download iOS 18.6.1 (22G90) 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 18.6.1
Release Date 2025-08-14
Update Date 2025-08-08
Sha1sum
74ba9f2b356eba43a254721acbd2f24d207a4399
Sha256sum
f56ec6ee6adaa576b542b8b736243ae527fdbfb271830c3d194b2a0978c566a2
md5sum
a9859eb5c26ae581f8c39af06ce0b6d6
Size 8.62 GB
FileName
iPhone15,4_18.6.1_22G90_Restore.ipsw
Status

Download IPSW (8.62GB) Check device info
Release Notes

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

Apple Intelligence (All iPhone 16 models, iPhone 15 Pro, iPhone 15 Pro Max)

Apple Vision Pro App

Apple News+

Photos

This update also 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:

https://support.apple.com/100100