IPSW Downloads

iOS 14.3 - 18C66 for iPhone 6s

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

Release Date14 December 2020
Upload Date09 December 2020
File NameiPhone_4.7_14.3_18C66_Restore.ipsw
File Size4.24 GB
SHA256sum2040f73793ba3d3361bad72ecae36d3c0919e6798cd60581a5ba2f8d459f3293
MD5suma544da03166662cc754ab091d0e4611b
SHA1sumdfd7d0167a49ac3138beec24998ae5cd9355df7b
IdentifieriPhone8,1

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 6s to your PC.
  3. Open iTunes and navigate to your iPhone 6s.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_4.7_14.3_18C66_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 6s to reboot.

macOS

  1. Connect your iPhone 6s to your Mac.
  2. Navigate to your iPhone 6s in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_4.7_14.3_18C66_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 6s to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 6s to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPhone_4.7_14.3_18C66_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 6s to reboot.