Wio Lite W600 - LED won't blink

Hi! I got a Wio Lite W600 and it’s a great little board using it with the Arduino IDE.

I can’t get the “User LED” to blink. By the schematic; the LED is not connected to the SAMD21 chip - it is connected to the W600 module.

Is it possible to tell the W600 module to blink the LED, by AT command or something?

Or is there another way to blink a LED on this board? I tried set pin 3 high, and this blinks the CHG led (paradoxically setting PIN 3 LOW makes LED turn ON ???) - but only works when powering over USB, not when powering over LiPo battery.

Any suggetions welcome!