iOS 27.2.1 (24B156) for iPhone 17
✓ This firmware is signed. This means that you can restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.
Your download should begin shortly. If it does not, you can download it directly here:
Download (12 GiB)Windows
- Install the latest version of Apple Devices from the Microsoft Store.
- Plug your iPhone 17 in to your PC.
- Open Apple Devices, and navigate to your iPhone 17.
- Hold the Shift key on your keyboard, and press "Restore".
- Select the
iPhone18,3_27.2.1_24B156_Restore.ipswfile that you downloaded. - Wait for the restore to complete, and the iPhone 17 to reboot.
macOS
- Plug your iPhone 17 in to your Mac.
- Navigate to your iPhone 17 in Finder.
- Hold the Option or Alt key on your keyboard, and press "Restore".
- Select the
iPhone18,3_27.2.1_24B156_Restore.ipswfile that you downloaded. - Wait for the restore to complete, and the iPhone 17 to reboot.
Linux
- Install idevicerestore.
- Plug your iPhone 17 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 iPhone18,3_27.2.1_24B156_Restore.ipswand press enter. - Wait for the restore to complete, and the iPhone 17 to reboot.
Windows
- Open PowerShell, and navigate to the IPSW file that you downloaded, e.g.
cd Downloads - Type
Get-FileHash iPhone18,3_27.2.1_24B156_Restore.ipsw -Algorithm SHA1 - The output of the command should match the following checksum:
e9784661fef0861de0c80bb3af94618d9e9451f7. 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 iPhone18,3_27.2.1_24B156_Restore.ipsw - The output of the command should match the following checksum:
e9784661fef0861de0c80bb3af94618d9e9451f7. 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 iPhone18,3_27.2.1_24B156_Restore.ipsw - The output of the command should match the following checksum:
e9784661fef0861de0c80bb3af94618d9e9451f7. If it doesn't, you may need to redownload the file.
Checksums
| SHA256sum | d5fc353ece9bbd6e18054c07b994bfdb3e646cbfcb48eb98cb5486cbe66e1f32
|
|---|---|
| MD5sum | c3888c5d43bbe6cee6d1d08036e66826
|
| SHA1sum | e9784661fef0861de0c80bb3af94618d9e9451f7
|
Please note, the documentation below is supplied from Apple's update servers.
We don't modify the contents of this documentation.
This update provides bug fixes and security updates for your iPhone.
For information on the security content of Apple software updates, please visit: