Download and Install iOS 17.5.1 (21F90) for iPhone 15 Pro Max / IPSW Downloads

iOS 17.5.1 (21F90) for iPhone 15 Pro Max

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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Download (7.7 GiB)

This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

Install the latest version of Apple Devices from the Microsoft Store.
Plug your iPhone 15 Pro Max in to your PC.
Open Apple Devices, and navigate to your iPhone 15 Pro Max.
Hold the Shift key on your keyboard, and press "Restore".
Select the iPhone16,2_17.5.1_21F90_Restore.ipsw file that you downloaded.
Wait for the restore to complete, and the iPhone 15 Pro Max to reboot.

macOS

Plug your iPhone 15 Pro Max in to your Mac.
Navigate to your iPhone 15 Pro Max in Finder.
Hold the Option or Alt key on your keyboard, and press "Restore".
Select the iPhone16,2_17.5.1_21F90_Restore.ipsw file that you downloaded.
Wait for the restore to complete, and the iPhone 15 Pro Max to reboot.

Linux

Install idevicerestore.
Plug your iPhone 15 Pro Max in to your PC.
Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
To perform a full erase restore, type idevicerestore -e iPhone16,2_17.5.1_21F90_Restore.ipsw and press enter.
Wait for the restore to complete, and the iPhone 15 Pro Max to reboot.

Windows

Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
Type Get-FileHash iPhone16,2_17.5.1_21F90_Restore.ipsw -Algorithm SHA1
The output of the command should match the following checksum: 09ec0f44cb82f421af2f5fcbfa7de3beec59570e. If it doesn't, you may need to redownload the file.

macOS

Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
Type openssl sha1 iPhone16,2_17.5.1_21F90_Restore.ipsw
The output of the command should match the following checksum: 09ec0f44cb82f421af2f5fcbfa7de3beec59570e. If it doesn't, you may need to redownload the file.

Linux

Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
Type openssl sha1 iPhone16,2_17.5.1_21F90_Restore.ipsw
The output of the command should match the following checksum: 09ec0f44cb82f421af2f5fcbfa7de3beec59570e. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum	`89e1eed78fb37c96e5d98f0dbf9e1569ee63e83b05657226ace2f70df803cd14`
MD5sum	`89e1eed78fb37c96e5d98f0dbf9e1569ee63e83b05657226ace2f70df803cd14`
SHA1sum	`09ec0f44cb82f421af2f5fcbfa7de3beec59570e`

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update provides important bug fixes and addresses a rare issue where photos that experienced database corruption could reappear in the Photos library even if they were deleted.