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iPhone 8 Plus (GSM)

iOS 12.1.1 (16C50) for iPhone 8 Plus (GSM)

✗ This firmware is not signed. This means you cannot restore to it in iTunes.

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✗ This firmware is not signed. This means you cannot restore to it in iTunes. The instructions below are included for reference only.

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your iPhone 8 Plus (GSM) in to your PC.
  3. Open iTunes, and navigate to your iPhone 8 Plus (GSM).
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 8 Plus (GSM) to reboot.

macOS

  1. Plug your iPhone 8 Plus (GSM) in to your Mac.
  2. Navigate to your iPhone 8 Plus (GSM) in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 8 Plus (GSM) to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 8 Plus (GSM) in to your PC.
  3. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  4. To perform a full erase restore, type idevicerestore -e iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 8 Plus (GSM) to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 5654fa066b557ad0d9f81c3c68239fa1c4770fb1. If it doesn't, you may need to redownload the file.

macOS

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw
  3. The output of the command should match the following checksum: 5654fa066b557ad0d9f81c3c68239fa1c4770fb1. If it doesn't, you may need to redownload the file.

Linux

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone_5.5_P3_12.1.1_16C50_Restore.ipsw
  3. The output of the command should match the following checksum: 5654fa066b557ad0d9f81c3c68239fa1c4770fb1. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 7992d5b9453bd17cae28c14605821db4b08e852bd38e46619febf613a0ad9bec
MD5sum bb425d877034c27d14d10e99bccba936
SHA1sum 5654fa066b557ad0d9f81c3c68239fa1c4770fb1
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 12.1.1 adds features and fixes bugs for your iPhone and iPad. Features and improvements include:

  • Notification preview using haptic touch on iPhone XR

  • Dual SIM with eSIM for additional carriers on iPhone XR, iPhone XS, and iPhone XS Max

  • One tap to flip between the rear and front-facing camera during a FaceTime call

  • Live Photo capture during one-to-one FaceTime calls

  • The option to hide the sidebar in News on iPad in landscape orientation

  • Real-time text (RTT) when using Wi-Fi calling on iPad and iPod touch

  • Stability improvements for dictation and VoiceOver

Bug fixes include:

  • Fixes an issue where Face ID may temporarily become unavailable

  • Addresses an issue that prevented visual voicemail from downloading for some customers

  • Fixes an issue in Messages that could prevent predictive text suggestions when typing on the Chinese or Japanese keyboards

  • Addresses an issue that could prevent Voice Memos recordings from uploading to iCloud

  • Fixes an issue where time zones may not have updated automatically

This release also adds features and fixes bugs for HomePod including:

  • Support in Mainland China and Hong Kong

  • HomePod LEDs illuminate during Group FaceTime calls

For information on the security content of this update, please visit this website: https://support.apple.com/kb/HT201222

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