A: No. The 5121 series requires RDWorks v6 or older. Do not attempt to force it.
A: Not at all. The v8 series is backward compatible back to RDC6442G controllers (2013+). Have you successfully updated to RDWorks v8.01.54? Share your experience in the comments below – does the USB stability truly improve for your machine? rdworks v80154 download updated
[Internal link: RDWorks vs LightBurn: Which is Right for You?] or similar Chinese OEM machines
If you are operating a CO2 laser engraver or cutter from brands like Ruida, G.Weike, or similar Chinese OEM machines, you are likely familiar with RDWorks . It remains the most popular, feature-rich, and stable software for controlling Ruida controllers (RDC644X, RDC6442, RDC6445, etc.). rdworks v80154 download updated