About This Firmware
iOS 15.8.8
(build 19H422) is an official Apple IPSW
for the iPhone 6s+,
released on 2026-05-11.
The download is 5.05 GB and is served directly from Apple's CDN.
This firmware is currently signed by Apple, so it can be used to restore or update your device via iTunes or Finder.
Verify the download using the checksums below.
Filename
iPhone_5.5_15.8.8_19H422_Restore.ipsw
Checksums
SHA-256
bfa590392f10d4b4c7600921f8c3158e861bd2680d9e188351f478b54406332b
SHA-1
e44b9964d6a1cdaf8f3ed5d1675959da806301cf
MD5
56c5b3f48a5b3cf83943126777f6794d
Direct URL
https://updates.cdn-apple.com/2025FallFCS/fullrestores/122-77536/9EE30DC1-EC4B-47CE-A002-24CD6B18947D/iPhone_5.5_15.8.8_19H422_Restore.ipsw
Other Devices
iPhone 12 Pro
iPhone13,3
iPhone 2G
iPhone1,1
iPhone 11 Pro Max
iPhone12,5
iPhone 13 Pro
iPhone14,2
iPhone 12 Pro Max
iPhone13,4
iPhone 3GS
iPhone2,1
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone 6s+ 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 6s+ 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