For installation/ upgrade instructions, please read this guide:
Important Note: You must have PHP 5.6+ installed and running for this version of rConfig to operate correctly.
NOTE: if you are upgrading from previous versions, please be sure to take a full backup of current rConfig installation and data
FINAL NOTE: You may download and use rConfig free of charge. It's easy to setup and use. I have provided a ton of documentation and troubleshooting guides on this site to help you get started. I will only reply to support queries if you have purchased support. Please purchase support for rConfig here https://www.rconfig.com/buy-support