Ive forgotton my tm600 password - any ideas how I can sort this please?

Its been ages since Ive tinkered with the box (..insert joke here) but Ive forgotten the password I put on it. Ive tried abra ka-dabra and open sesemi but neither of these work.

Ive installed tuxbox to try and get around the back (..insert second joke here) but it still asks me for a password.

Any chance you clever guys know who I can get in as Im trying to get my dvbviewer client working? Its on my state of the art TM600 :)

Thanks