I HAVE PURCHASED A CAMBRIDGE AUDIO DVD 59 AND I TRIED THE HACK POSTED BY MIXDR AND IT TOO WORKS ON MY DVD 59.
**NEW HACK***
1. Press the 'Setup' button to enter the 'Setup' Menu.
2. Move the cursor to the 'Speaker Setup' page.
3. Press 9,2,1,0 in sequence to enter version page.
4. Select "Support mode on".
5. Power player 'OFF' then 'ON' again.
6. Upgrade completed.