RCA J2C DownfilesSync keeps J2Commerce downloadable products aligned with versioned ZIPs under your attachment root. Full Auto mode matches master SKUs to package folders; Manual mode and map overrides remain when you need them. Retail sellable-only mode separates storefront package products from updater-only child folders on disk.
Use the menu under RCA J2C DownfilesSync Docs for overview, quick start, install and updates, requirements, configuration, how-to guides, frontend, integrations, troubleshooting, FAQ, changelog, and support. Requirements and Configuration explain folder trees, ZIP naming, Auto versus Manual sync, ignored versus unmapped folders, and cron.