Apple iPhone 17 iOS 26.5.1 IPSW firmware
Apple iPhone 17
Not signed
iOS 26.5.1
Build 23F81 For iPhone18,3, V57AP
Global · IPSW
A newer version is available for this region: iOS 27.2 beta 4
Apple no longer signs this version, so a normal restore with Finder or iTunes will fail. Use a signed version unless you know you need this one.
Download
10.6 GB
Downloads from updates.cdn-apple.com.
File details
- Device
- Apple iPhone 17
- OS
- iOS 26.5.1
- Region
- Global
- Type
- IPSW
- Released
- Size
- 10.6 GB
- File name
iPhone18,3_26.5.1_23F81_Restore.ipsw- MD5
fcee02dd10a04b054682df645864b3db- SHA-1
602258b77dabf46353051ab85edbc2263ca570e5- SHA-256
afaf1012ff57bcee438c98ae49825167bf643921037c1acab10507e588c195f2
After downloading, compare the checksum with the one above. If they differ, the file is incomplete — download it again.
Before you download
- Make sure your device’s model number is one of: iPhone18,3, V57AP. You will find it in Settings → About phone, or on the box.
- This file is for the Global region. Installing another region’s firmware can remove features or block updates.
- Apple devices can only restore versions marked “Signed”.
- Back up your photos, contacts and files first, and charge the battery above 50%.
How to install
Use Finder on a Mac or the Apple Devices app / iTunes on Windows to install an IPSW file. Apple only accepts versions it is still signing, so check the “Signed” label before you download.
Read the guide: How to restore an iPhone, iPad or iPod with an IPSW file