Filmware update: https://help.prusa3d.com/article/firmware-updating-mk3s-mk3s-mk3_2227
https://help.prusa3d.com/downloads#_ga=2.253347405.530776908.1682329028-902662619.1676599756
Slicer download:https://www.prusa3d.com/page/prusaslicer_424/