Apple iPhone Air iOS 26.1 beta IPSW firmware
Apple iPhone Air
Not signed
iOS 26.1 beta
Build 23B5044l For iPhone18,4, D23AP
Global · IPSW
A newer version is available for this region: iOS 27.2
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
10.4 GB
Downloads from updates.cdn-apple.com.
File details
- Device
- Apple iPhone Air
- OS
- iOS 26.1 beta
- Region
- Global
- Type
- IPSW
- Released
- Size
- 10.4 GB
- File name
iPhone18,4_26.1_23B5044l_Restore.ipsw- SHA-1
83ada912a205e571fa3c736507ebcc182de9b43f- SHA-256
c835df823cf22157f5cb6480a9e84b4f3856b24c4be151567474a7cd7393333b
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: iPhone18,4, D23AP. 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