RM3100 on modalai_fc-v1 PX4 1.12.3+

Hey there,
I’ve installed an RM3100 magnetometer unit and do not get it to work!
I’ve tried all possible permutations of “start” commands and interfaces and made sure to include the driver in firmware.
I’m trying to use I²C-interface and did “i2cdetect” with nothing on any buses…

Is there anything special with the RM3100 compared to the ilk of HMC’s I need to watch out for or is it not quite yet supported or am I doing something wrong?

Thanks for consideration and best regards from Germany! <3

Update: I managed to get it to appear on the I2C bus but starting it doesn’t work. Any ideas?