HTBasic 2021.1 Runtime Update. Download Only. Single User Perpetual license. Updates are free if the previous version was purchased within the last 90 days and for one year following purchase of a new Runtime License. After one year, updates may be purchased for the current Update price. A Runtime Update license key (serial number) will be generated from the previous license key. Upgrading from versions older than the previous “major” release requires purchase of a new Runtime License. Optional add-ons include a Getting Started Guide and a 4GB USB backup drive with storage for programs and data. Please allow 24 hours for License Keys to be emailed after an order is placed.