All valid previous version serial numbers for Surfer, Grapher, Voxler, Strater, MapViewer, or Didger can currently** be upgraded to the current version at a rate that is discounted from the price of a new license. Upgrade prices can be found on each product's webpage.
To be eligible for upgrade pricing, the serial number must be registered to the purchaser and must not have been previously upgraded. If you're unsure if your serial number qualifies, please contact Golden Software.
** The upgrade program for Surfer and Grapher will be ending in December 2020. It will be replaced by software maintenance, which includes benefits such as free priority support and free updates to the newest version. One free year of software maintenance is included with each purchase.
Updated February 17, 2020