I just got in an old R2 circa 2017. The IR probe did a 4x4 map of the bed. However it did not recognize the G36 gcode command. The G36 command has a home followed by a G35 command which does an additional probe test measuring ambient light before executing a G29 bed leveling. The last code by Robo which I posted recognizes the G36 command. The problem is that it only has a 3x3 map of the bed. I have posted in http://community.robo3d.com/index.p...arlin-code-and-where-everything-exists.24727/ How to modify the latest code to an NxN map. I use 5x5. I would recommend updating to the latest code and then modifying to a 5x5 map.