Hi Mark,
How did you get on with this? I'm in pretty much the same place.... I've got 35 Fibaro Dimmer 2 dimmers to migrate, and they're pairing S0 with my C7. I'm looking at getting an Aeotec Gen5 and then following this guide:
to pair them with no security, but it's not 100% clear to me whether the guide is written for the C7 hub - it looks like you have to pair the USB stick with the HE without security:
“Just include your Z stick and when it comes to the DSK portion click "skip" so it gets no security. If the z stick has no security, it cannot include with security.” (bottom of page 8)
But I don't think I can do that on a C7.
