About This Firmware
iOS 4.2.10
(build 8E600) is an official Apple IPSW
for the iPhone 4 (CDMA).
The download is 652.74 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
iPhone3,3_4.2.10_8E600_Restore.ipsw
Checksums
SHA-256
55f7af45f0f26688b519bbc18c5f7c6035bb437725c7be83ecad7ef27aa7f0c0
SHA-1
789ee18ee9659c87cfff304f69fd7ea4c205693b
MD5
2c0dd880982f0f8e47dc3dadfb733ad7
Direct URL
https://secure-appldnld.apple.com/iPhone4/041-1959.20110721.jvP29/iPhone3,3_4.2.10_8E600_Restore.ipsw
Other Devices
iPhone 14 Plus
iPhone14,8
iPhone 8 (GSM)
iPhone10,4
iPhone 8 (Global)
iPhone10,1
iPhone 14 Pro
iPhone15,2
iPhone X (GSM)
iPhone10,6
iPhone 15 Plus
iPhone15,5
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone 4 (CDMA) 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 4 (CDMA) 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