At the time of the purchase, Tascam made a software available that allowed you to edit the DSD tracks, and split them into tracks. It also allowed for a resampling from DSD to PCM format. DiscWelder Bronze, I think it was? It was free to the purchaser, but cost like $600 to buy if not.
The prob with the DVRA1000 was likely firmware related; but, it would randomly destroy the table of contents of the master disc, rendering it unplayable on the unit. The unit would not recognize it as its own source data. It did this to me a couple of times at the very end of live recordings, and rendered those efforts dead; fortunately I had backup tracks rolling.
I found out just this year, 6 months ago, that those recordings that I thought were destroyed, were in fact still viable as data on the master discs. So I am now able to extract them, and, now rendering to PCM in those instances where I still needed to do so. processing,....