I'm at the latest version. I updated the firmware, rebooted radio, rebuild network, changed channel, disabled and then re-enabled, did a Full Reset. Always same thing. It becomes online for 10 seconds and returns OFFLINE. Sometimes it freezes in Rebooting mode I then have to reboot the hub. It was working fine on C-8. I also opened a ticket with support.
I'm writing here in case I missed something at looking in the forum.