Firmware upgrade, now showing do_exit+8ec error

Hello,

Hopefully someone can help me with this.

I logged into the admin page of the ReadyNAS tonight and it was telling me an update was availible, i think i was on 6.4.2 and 6.6.0 was availible, not thinking much of it i clicked to update the firmware. After 15mins a little while i checked the NAS again to see what its status was, i could not access the web admin page so i checked the NAS itself and the screen was showing a message "do_exit+8ec". I left it a while longer to see if its status would change but it did not. I pulled the power from the NAS box and turned it back on but unfortuantly its showing the same message with no access to its admin page.

Any ideas or suggestions to resolve this?

Thanks