Apple iPhone 15 Plus iOS 17.1.1 IPSW firmware
Apple iPhone 15 Plus
Not signed
iOS 17.1.1
Build 21B91 For iPhone15,5, D38AP
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
7.47 GB
Downloads from updates.cdn-apple.com.
File details
- Device
- Apple iPhone 15 Plus
- OS
- iOS 17.1.1
- Region
- Global
- Type
- IPSW
- Released
- Size
- 7.47 GB
- File name
iPhone15,5_17.1.1_21B91_Restore.ipsw- MD5
b391e8ee74c8f3bcce2308fc59fa4ddc- SHA-1
12ab57c12a0a9036a21ecf5c462a11ed6305f538- SHA-256
5ad53006572f4fd4128a9e561ab93eb0632b0d927f64c69bd67c61b813e43f96
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: iPhone15,5, D38AP. 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