Marlin firmware voids warranty.
I was having problems with a changing z axis home point. I bought my ender 3 v2 from comgrow so they requested I send a video of the problem. After seeing I was using Marlin firmware they stated my third party firmware voided my warranty. Seems to me Marlin is the first party and creality software is the 2nd party. Oh well, just venting on my first post here.