[atlas] Unable to connect my probe

Hello

I've received my probe #16969 yesterday, registered it and tried to
connect it behind my Orange Livebox here in France.
It doesn't succeed to get connected and even doesn't get an IP from
the DHCP server of my box (which delivers IP address to my other
devices).
I have tried this morning to connect it to another Internet access, at
work and this failed too.
Led #4 remains blinking.

I can see in MyAtlas interface that the probe got connected just after
the first boot, as I can see to request to DNS servers logged in the
interface.
May be, an upgrade began and got interrupted, leaving the probe in a
strange state, I don't know...

Anyway, what should I do now ? Request another probe ? Send this one
back to the RIPE ?
If so, where should I send it ?

Regards.