About This Firmware
iPadOS 8.1.2
(build 12B440) is an official Apple IPSW
for the iPad Air (China),
released on 2014-12-09.
The file 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
iPad4,3_8.1.2_12B440_Restore.ipsw
Checksums
SHA-256
3cc4c52af75d70fd32fb1fa4a1c63053e63f47cda6ee2fb7f98db32cd2e881d7
SHA-1
9746ebe1a81974a76a8df087cc624b3303c594c5
MD5
2267c4c411623d280056c5a7a1e34c9c
Direct URL
http://appldnld.apple.com/ios8.1.2/058-11183.20141208.cSD7k/iPad4,3_8.1.2_12B440_Restore.ipsw
Other Devices
iPad Air (M2, 13-inch, WiFi)
iPad14,10
iPad mini 5 (Cellular)
iPad11,2
iPad 7 (WiFi)
iPad7,11
iPad mini (A17 Pro, WiFi)
iPad16,1
iPad 8 (WiFi)
iPad11,6
iPad 1
iPad1,1
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPad Air (China) 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 iPad Air (China) 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