About This Firmware
iPadOS 4.3.5
(build 8L1) is an official Apple IPSW
for the iPad 1.
The download is 593.43 MB 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
iPad1,1_4.3.5_8L1_Restore.ipsw
Checksums
SHA-256
e9af39ad7c8c1c06816abab97824b01071ab46a5f745c4b8980a09127b7b9e55
SHA-1
66a114630a457dea3565cf99b9285b2fe3d56d62
MD5
d80101eb0b1b460e319f9124f252813c
Direct URL
https://secure-appldnld.apple.com/iPhone4/041-1957.20110721.6UHaN/iPad1,1_4.3.5_8L1_Restore.ipsw
Other Devices
iPad Pro 13-inch (M5, WiFi)
iPad17,3
iPad mini 5 (Cellular)
iPad11,2
iPad 5 (WiFi)
iPad6,11
iPad Pro 12.9-inch (Cellular)
iPad6,8
iPad 4 (GSM)
iPad3,5
iPad mini 6 (WiFi)
iPad14,1
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPad 1 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 1 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