PX4Flow stopped working

Hello

I have a Pixhawk 1 [v. 4.0.7] installed with a PX4Flow and TFMini Plus RF. All was good with calibration of the flow, getting opt_x and opt_y data. However I accidentally conducted an ArduCopter firmware Reset to Default and the OF stopped working. The RF continues to work ok.

I checked all the wiring, reloaded the OF fm, calibrated the focus, but no luck on data. I tried earlier Copter fm versions. It doesn’t seem the OF is recognized by MP as well.

Settings
FLOW_TYPE=1, FLOW_ADDR=0, FLOW_ORIENT_YAW=9000
EK2_ENABLE= 1, EK2_FLOW_USE=1
BRD_BOOT_DELAY=600

It is not currently connected to a separate UBEC but I planned to do so once I got data again.

I have read most of the previous messages on this topic.

Would appreciate any feedback !