About This Firmware
iOS 9.3.6
(build 13G37) is an official Apple IPSW
for the iPhone 4s,
released on 2019-07-22.
The download is 1.50 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
iPhone4,1_9.3.6_13G37_Restore.ipsw
Checksums
SHA-256
2466a99001c9e091e22f330a1c97a231179d1679f58fd9d1cf0c1694ca8261bd
SHA-1
6ccddbfdf4a0d6747924252d379ad6d52f7d4ea8
MD5
26f4c6077e5f9beda57f100cda21e464
Direct URL
https://updates.cdn-apple.com/2019/ios/041-80043-20190722-6C65AD27-69D8-499C-BC15-DE7AC74DE2BD/iPhone4,1_9.3.6_13G37_Restore.ipsw
Other Devices
iPhone 5 (Global)
iPhone5,2
iPhone 5s (Global)
iPhone6,2
iPhone 15 Plus
iPhone15,5
iPhone 18 Pro
iPhone19,2
iPhone 12 mini
iPhone13,1
iPhone 16
iPhone17,3
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone 4s 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 4s 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