I was out riding yesterday with the Varia Radar rear light using FW 3.60. I am also using the RDU (on FW 3.40). It seemed to me that most cars were being detected later than before. The white leds indicating a car were first appearing in the upper half of the display. This was on straight roads and with little traffic. In one case no red light was displayed when a car was coming very fast behind me and the white led first appeared right at the top of the display.
Anyone else used the updated firmware?