Sensorless homing for Ender 3 skr mini E3V3 Bltouch

Hello. I created a firmware build on the firmware builder, but I would need for the firmware to have enabled sensorless homing. I was hoping to just download the uncompiled file so I could change it. but I dont see it available. Is there a way to download it or to add sensorless homing option to the configurator? (Ender 3 skr mini E3V3 Bltouch