About This Firmware
iOS 26.4
(build 23E246) is an official Apple IPSW
for the iPhone Air,
released on 2026-03-24.
The download is 10.28 GB and is served directly from Apple's CDN.
This firmware is no longer signed by Apple. Standard downgrades are not possible, but the file remains available for reference and advanced use.
Verify the download using the checksums below.
Filename
iPhone18,4_26.4_23E246_Restore.ipsw
Checksums
SHA-256
0a708f3031d3e4a8d14c199270db9bb6fd405b933779e1c42bbad0b79c3cc65c
SHA-1
ba5d707c4e5421414126880247220cf75984e69f
MD5
c41514a5290fd86aa965fb81452e561c
Direct URL
https://updates.cdn-apple.com/2026SpringFCS/fullrestores/122-06787/B893F5E8-6B35-451C-AC71-E6F82D1438B4/iPhone18,4_26.4_23E246_Restore.ipsw
Other Devices
iPhone 17 Pro Max
iPhone18,2
iPhone XS Max (China)
iPhone11,4
iPhone XS
iPhone11,2
iPhone SE
iPhone8,4
iPhone 3GS
iPhone2,1
iPhone 11
iPhone12,1
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone Air via USB.
- Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina+) and select your device.
- Update (keep data): hold Option (Mac) or Shift (Windows) and click Update, then pick the .ipsw file.
- Restore (erase & install): hold Option / Shift and click Restore iPhone…, then pick the .ipsw file.
- Wait for the process to finish - do not disconnect.
Restoring will erase all data on the device. Back up first.
3uTools
Windows- Download and install 3uTools from 3u.com.
- Connect your iPhone Air via USB and trust the computer on the device.
- Go to Flash & JB > Easy Flash.
- Click Import and select the downloaded .ipsw file.
- Choose Flash mode: Update keeps data, Restore wipes the device.
- Click Flash and wait for the progress bar to complete - do not disconnect.
Only flash firmware that matches your exact device model.
DFU Mode
Recovery tipIf your device is stuck in a boot loop or iTunes/Finder does not recognise it, enter DFU mode first, then select the .ipsw file as normal.
iPhone 8 / X and later
- Quickly press & release Volume Up
- Quickly press & release Volume Down
- Hold Side button until screen goes black
- Hold Side + Volume Down for 5 s
- Release Side, hold Volume Down 5 more s
- Black screen = DFU active
iPhone 7 / 7 Plus
- Hold Sleep/Wake + Volume Down for 8 s
- Release Sleep/Wake, keep holding Volume Down for 5 s
- Black screen = DFU active
iPhone 6s and earlier
- Hold Sleep/Wake + Home for 8 s
- Release Sleep/Wake, keep holding Home for 5 s
- Black screen = DFU active