Crealitys firmware is very bad.
Miguel A. Risco Castillo made a brilliant firmware for this printer
the latest version of the firmware:
https://github.com/mriscoc/Marlin_Ender3v2/releases/latest
(ich habe ein 4.2.2 board – beim Download drauf achten!)
Also the wiki has many interesting topics about Octoprint, BLTouch, etc:
https://github.com/mriscoc/Marlin_Ender3v2/wiki
