Synchronous requires Reason 7.1/ Reason Essentials 2.1 or higher. Reason 7.1 is a free upgrade for owners of Reason 7, and Reason Essentials 2.1 is a free upgrade for owners of Reason Essentials 1.x–2. You can download the updates here:
• Reason 7.1
• Reason Essentials 2.1
For Propellerhead Shop customers Synchronous comes bundled automatically with all Reason (full version and upgrades) and Reason Essentials purchases between April 9th and June 30th 2014.
Retail store customers should first download Reason version 7.1 . Once you have downloaded version 7.1, Synchronous will be available as a free download from the Propellerhead Shop Please note that the free Synchronous download is only available until June 30th – regardless of when you purchased your copy of Reason, so don’t forget to grab your copy!