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Developer Transition Kit

macOS 11.2.2 (20D80) for Developer Transition Kit

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

Your download should begin shortly. If it does not, you can download it directly here:

Download (13.7 GB)

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Plug your Developer Transition Kit in to your PC.
  3. Open iTunes, and navigate to your Developer Transition Kit.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the UniversalMac_11.2.2_20D80_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the Developer Transition Kit to reboot.

macOS

  1. Plug your Developer Transition Kit in to your Mac.
  2. Navigate to your Developer Transition Kit in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the UniversalMac_11.2.2_20D80_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the Developer Transition Kit to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your Developer Transition Kit 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 UniversalMac_11.2.2_20D80_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the Developer Transition Kit to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash UniversalMac_11.2.2_20D80_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: 527d331410e16cd8388f05cf3b4443679e965ee6. 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 UniversalMac_11.2.2_20D80_Restore.ipsw
  3. The output of the command should match the following checksum: 527d331410e16cd8388f05cf3b4443679e965ee6. 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 UniversalMac_11.2.2_20D80_Restore.ipsw
  3. The output of the command should match the following checksum: 527d331410e16cd8388f05cf3b4443679e965ee6. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum 62650fe071330a8fcfa7f4d0030692d7b005fdadb1891b1ec6e6658bd2cdb978
MD5sum 45233fafc715dd498897cc16267340cd
SHA1sum 527d331410e16cd8388f05cf3b4443679e965ee6
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