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iPhone 6s

iOS 13.3 (17C54) for iPhone 6s

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

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Download (3.72 GB)

✗ 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 6s in to your PC.
  3. Open iTunes, and navigate to your iPhone 6s.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone_4.7_13.3_17C54_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 6s to reboot.

macOS

  1. Plug your iPhone 6s in to your Mac.
  2. Navigate to your iPhone 6s in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone_4.7_13.3_17C54_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 6s to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 6s 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_4.7_13.3_17C54_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 6s to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone_4.7_13.3_17C54_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 66e423869cfe69ced386d3eccea595caa42ff86f. 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_4.7_13.3_17C54_Restore.ipsw
  3. The output of the command should match the following checksum: 66e423869cfe69ced386d3eccea595caa42ff86f. 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_4.7_13.3_17C54_Restore.ipsw
  3. The output of the command should match the following checksum: 66e423869cfe69ced386d3eccea595caa42ff86f. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum dad0fe7c5f93bce41d09e5c5b172cec80912afddf254b17efe549d17c53c096b
MD5sum 978e3687e0f3f72fbba19e5ad3f74723
SHA1sum 66e423869cfe69ced386d3eccea595caa42ff86f
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 13.3 includes improvements, bug fixes and additional parental controls for Screen Time.

Screen Time

  • New parental controls provide more communication limits over who their children can call, FaceTime, or Message
  • Contact list for children lets parents manage the contacts that appear on their children’s devices

Apple News

  • New layout for Apple News+ stories from The Wall Street Journal and other leading newspapers
  • Easily like or dislike stories with a tap

Stocks

  • Stories from Apple News are now available in Canada in English and French
  • Continue reading with links to related stories or more stories from the same publication
  • “Breaking” and “Developing” labels for Top Stories

This update also includes bug fixes and other improvements. This update:

  • Enables the creation of a new video clip when trimming a video in Photos
  • Adds support for NFC, USB, and Lightning FIDO2-compliant security keys in Safari
  • Fixes issues in Mail that may prevent downloading new messages
  • Addresses an issue that prevented deleting messages in Gmail accounts
  • Resolves issues that could cause incorrect characters to display in messages and duplication of sent messages in Exchange accounts
  • Fixes an issue where the cursor may not move after long pressing on the space bar
  • Addresses an issue that may cause screenshots to appear blurry when sent via Messages
  • Resolves an issue where cropping or using Markup on screenshots may not save to Photos
  • Fixes an issue where Voice Memos recordings may not be able to be shared with other audio apps
  • Addresses an issue where the missed call badge on the Phone app may not clear
  • Resolves an issue where the Cellular Data setting may incorrectly show as off
  • Fixes an issue that prevented turning off Dark Mode when Smart Invert was enabled
  • Addresses an issue where some wireless chargers may charge more slowly than expected

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

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