For MAC: - First install Sylenth1Mac.dmg (version 2.02) - Generate the license using AiR-Keygen (requires wine) - Save the license as License.dat on the desktop - Run Sylenth1 in the DAW - Download the license from the 'Authorize-activate' MENU - Close the DAW - Install the update Sylenth1 v2.2.1Beta.mpkg - Open again DAW and check the license - DONE! If you already have Sylenth with the license, just install the update. For MAC only 32 bits available.