Full M600 support has not been implemented in the community firmware. If you try to do anything w.r.t. parking, the print won't continue afterwards, as the controller is stuck in host print mode and the LCD is unable to send it gcode. Might work if printing from a host like OctoPrint already, but definitely not for SD printing.
There is rudimentary pause support in the comminty FW, but from what I've heard form other users I do believe M25 works in the official firmware as well (haven't checked, though, haven't run the official firmware for more than two or three prints and am now on the BTT board, so can't even test)