Can anyone tell me where to find the latest documentation that reflects the hardware and firmware (MM) status of the BDP series of players.

In particular, I am trying to find out the meaning/significance of the setting "Enable Auto Fill DB" in the Media Player Settings (gear wheel). I have searched this forum and the Bryston website, but everything I have found seems to be out-of-date. Even the notes for the MM 2.38 release do not appear to address this particular "feature".

Thanks.