About This Firmware
iOS 2.2
(build 5G77) is an official Apple IPSW
for the iPhone 3G.
The download is 246.37 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
iPhone1,2_2.2_5G77_Restore.ipsw
Checksums
SHA-256
a0204ff695b9d916b33d21a9a220379c690c3bb63895817577395100fadb8289
SHA-1
f67f8b2b842428bf89456cda0c2d5cf954d111a4
MD5
fd33b6f92a6b5bc3dd0fa40b39a40c0c
Direct URL
https://secure-appldnld.apple.com/iPhone/061-5778.20081120.Aqw4R/iPhone1,2_2.2_5G77_Restore.ipsw
Other Devices
iPhone Air
iPhone18,4
iPhone 17e
iPhone18,5
iPhone 11 Pro
iPhone12,3
iPhone 13 Pro Max
iPhone14,3
iPhone 17 Pro Max
iPhone18,2
iPhone 7 (GSM)
iPhone9,3
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone 3G 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 3G 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