To upgrade your existing Power Pack to dBpoweramp Reference follow these steps:

1.  Visit the registration retrieval page, type the order number for your existing Power Pack purchase:

http://www.dbpoweramp.com/registration/

2.  Beneath the download link for Power Pack you will find an upgrade link, click it to upgrade.

Please note: Upgrades to Reference do not include AMG Access (must be bought separately). If upgrading from a product with free upgrades for life, dBpoweramp Reference upgrades are as follows:

Free upgrades to .x (point) releases, for example R12.1, R12.2

Additional cost to upgrade major releases, ie R12 to R13