Cannot log in using DCC or Filezilla DM800 HD se

Hi, I m trying to log into a Dreambox DM800 HD se to see how iptv works on it but I cannot login, I ve used root/dreambox, root/NO PASSWORD, root/passwd and it keeps saying
Bootmanager: not found.
Telnet Disconnected
Telnet login incorrect!
On Filezilla

Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Command: USER root
Response: 331 Please specify the password.
Command: PASS
Response: 530 Login incorrect.

If I need to reflash it what would be the best image to use?

try rebooting box and router check box ip and start a new session of filezilla client,maybe someone has put a password on box?
Hi cactikid, Yes tried all that but still nope, yes its a box belonging to a friend of mine and I d say the last supplier put a password on it :-(