Any update to this? Im kindve running into the same situation - my icamera2's are working fine but i received an XCAM that i can toggle the IR in the UI but it doesnt do anything and i dont know the command.
I found this FCC manual regarding a different camera but the same basic sercomm icontrol UI. it has the admin commands but im unable to find the correct command to trigger the IR: https://fccid.io/pdf.php?id=1418906
As a side not when i query the IR cut i get a filter=0 but on my icam2's i get filter=1 (http://...(IP)/io/query_filter.cgi)