Problem booting ReadyNAS NV after IP address change to DHCP

Thanks for your reply.

StephenB wrote:
Try RAIDar, and see if it sees the NAS and if so, what IP address it reports.

RAIDar does not see the ReadyNAS. It keeps coming up with the 'RAIDar Help ' dialog box, instead of the details of the unit.

StephenB wrote:
Also, then DHCP fails, the NAS should switch to address 192.168.168.168. So you could also try a direct connect, manually ssigning your PC a compatible address (192.168.168.100, subnet 255.255.255.0).

This is how I have been connecting to the box, with a direct cable between my Mac and ReadyNAS. This is how I also know that there are NO packets coming off the ReadyNAS. Wireshark will see ANY network acticity, regardless of what the Mac IP is. I did change the Mac IP to 192.168.168.167, and the subnet mask to 255.255.255.0, but could not ping, or get the admin page up. When the IP address was set to static (1921.68.2.2), I could see packets with Wireshark just fine.

StephenB wrote:
You can also try an OS reinstall. That will reset your admin password back to the original factory default, (not sure what that would be for your model), and also reset the IP configuration.

I tried holding the 'SYS RST' button on the back for up to 10 seconds, hoping to start an OS reinstall. No luck. No blinking lights, or activity of any kind (disk or net), either on the front panel, or the network.

How can I reinstall the OS, without doing a full systems reset? (even if that would work).
Is there a USB option for this model?
The disk and the data seem fine, seeing as the box was working fine and serving data, until I reset the IP address.