I have flashed with the "Jasager Firmware 1.0", with my laptop connected to the only port on this router, the wan port.
The only conflict it could have is with my laptop, and I have set my laptop's IP to 192.168.1.2, .99, etc etc
I have also attached to to another router with DHCP to see if it was looking for an IP address, but it never received one.
I have read elsewhere that these may have a problem rebooting after the flash, and seem to get stuck.
They can be re-flashed once they reach this state, but there does not seem to be anything else that can be done with them from this state.
I have also tried looking for it on a different subnet. But I have been unable to communicate with it.
Could it have anything to do with this router being previously setup with http://dashboard.open-mesh.com ?
I have read that you shouldn't allow the FON to update before flashing, but I didn't read anything about the open-mesh, so I didn't hesitate to plug it into a router and allow it to get an internet connection when I first got it.