I've finally got my audiomoths to flash using the paperclip approach, and having obtained the data cable recommended by Alex (thanks!).
I now cannot get either audiomoth unit recognised by my laptop to set the time using the time app, which I believe I need to do first before configuring them? Currently they're still not recognised by my laptop (running windows 10) - when plugged in and in USB/off mode I have a single green LED flashing very slowly, every 10 seconds. I can't see any reference as to what this is telling me.
I have 10 units to set up and deploy asap - why are they still not working?