Instructions for upgrading Anycubic Kossel mini to Marlin 1.1.9 Dowload the latest release of Marlin firmware https://github.com/MarlinFirmware/Marlin Dowload my repo with the files https://github.com/pentachore/Anycubic_kossel_mini_marlin_1.1.9 replace files from the Marlin repo with my Configuration.h and Configuration_adv.h You will need to adjuste the macro DELTA_HEIGHT. Follow the instructions provided by anycubic.