About This Firmware
iOS 13.6.1
(build 17G80) is an official Apple IPSW
for the iPhone 6s,
released on 2020-08-12.
The download is 3.53 GB 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
iPhone_4.7_13.6.1_17G80_Restore.ipsw
Checksums
SHA-256
8d85f43685c2ca64229bfc7905b4c60c0d9648f1b5bfa030fd7d235f3047609a
SHA-1
007a48af3cb7a91f564033f0ea08b4bbc2cb4ee9
MD5
eb8b60f6ea35b80f01d32848a782e46c
Direct URL
https://updates.cdn-apple.com/2020SummerFCS/fullrestores/001-29260/77973A75-1135-447E-A73C-87DE328279C2/iPhone_4.7_13.6.1_17G80_Restore.ipsw
Other Devices
iPhone 14 Pro Max
iPhone15,3
iPhone 13 Pro Max
iPhone14,3
iPhone 2G
iPhone1,1
iPhone 5 (Global)
iPhone5,2
iPhone 4 (GSM / 2012)
iPhone3,2
iPhone 6s+
iPhone8,2
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone 6s 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 6s 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