IPSW Downloads

macOS 11.6 - 20G165 for iMac

This firmware is signed. This means that you can restore to it in iTunes.

Release Date17 September 2021
Upload Date10 September 2021
File NameUniversalMac_11.6_20G165_Restore.ipsw
File Size13.00 GB
SHA256sum9bc6b9e0d42bb892ee139a8d88fc5e8ce2931d57743d8e3ed1ce45aa5da8add6
MD5sumdfee5d894ef02999dbd1a0214f232b9d
SHA1suma66fb4f527006b776a0ad2d435fe433367b551b1
IdentifieriMac21,2

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iMac to your PC.
  3. Open iTunes and navigate to your iMac.
  4. Hold the Shift key and click "Restore".
  5. Select the UniversalMac_11.6_20G165_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iMac to reboot.

macOS

  1. Connect your iMac to your Mac.
  2. Navigate to your iMac in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the UniversalMac_11.6_20G165_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iMac to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iMac 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 UniversalMac_11.6_20G165_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iMac to reboot.