Hi Jaimero

The release notes on Meridian's site have 1.55 as the last firmware, is that what you have? From memory that does sound like themost up to date version.

I know that page is limited, someone here previously had a link to a "Wayback Machine" archived page with the firmware, or at any rate more extensive notes on each release (the 568.2mm v2.59b isn't listed on the current notes page, although it's what most people will be running in their machines)

If your attention is drifting towards an upgrade, a 568.2mm is a worthwhile sonic upgrade over the 568. And they go for silly money these days, I think it's a complete bargain for the quality on offer. Still won't get you beyond DD and DTS, but you can hook up an HD621 for access to the High Res codecs on Bluray from your Oppo.

Cheers

George