iPhone 8 Plus (GSM)

iPhone10,5

IPSW Unsigned

iOS 12.1.1

16C50

OS: iOS
Version: 12.1.1
Build: 16C50
File Size: 3.26 GB
Released: 2018-12-05

About This Firmware

iOS 12.1.1 (build 16C50) is an official Apple IPSW for the iPhone 8 Plus (GSM), released on 2018-12-05. The download is 3.26 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_5.5_P3_12.1.1_16C50_Restore.ipsw

Checksums

SHA-256 7992d5b9453bd17cae28c14605821db4b08e852bd38e46619febf613a0ad9bec

SHA-1 5654fa066b557ad0d9f81c3c68239fa1c4770fb1

MD5 bb425d877034c27d14d10e99bccba936

Direct URL

https://updates.cdn-apple.com/2018FallFCS/fullrestores/041-05452/58557244-E9F9-11E8-9256-CC749043CDCB/iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw

Download IPSW

Other Devices

iPhone 7 Plus (Global)

How to Restore with This IPSW

iTunes / Finder

macOS & Windows

Download the .ipsw file to your computer.
Connect your iPhone 8 Plus (GSM) 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 8 Plus (GSM) 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 tip

If 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