Hello to everybody.

I'm in trouble with my Planex (PCi) MZK-NAS01SG.
I did the FW update to the latest 1.4.2 from the Planex WebGUI, it seemed to finish fine...but after rebooting the device, no more WebGUI was available for viewing NAS and also to manage it, for example to reflash again firmware (bricked??).
Now, I'm able to connect the NAS in ethernet (its IP is now 192.168.1.254), and the ping response is Ok.
I can start a telnet session from windows (Win7 x64) telnet 192.168.1.254 at port 1192.
login as root with password: password when requested, and I'm at the command prompt #.
I can browse directories, type commands, and look to the files on the HDD (DataFolder), where i put the images-1.3.6.bin file (latest working fine).
But I cannot use it anymore.
My linux knowledge is very poor. Is there a way to recover my Planex MZK-NAS01SG from the busybox console, before open the box and try the serial connection procedure explained?
Thanks a lot in advance.