For the longest time I played on 0.19.2.324 Which I think was the release after that one Sandman. It was pretty stable, only crashed after long sessions of play.
It is a little out of date at the moment.
As you probably know by now I have upgraded to 0.19.2.726
I didn't even know there was a more recent PSP Eboot. Mine works pretty well but it locks up after playing a few games with a Blue screen or Extreme slowdown.
I tried Bas version and yours I believe and they were stable but a lot of the cards didn't work like they are suppose to...
Shadows over Innistrad (SOI) is still not working with clues. I get No ID Found when trying to use Bygone Bishop & Tireless Tracker.
Just to be clear the version I posted is just an older version of the official version.
I did none of the work aside from downloading it back in the day and uploading it when the latest version (0.19.2.780) had s bit of a hiccup on the PSP.
Bas has/is going to a lot of trouble to try and update an older version and increase compatibility. As he works on it more and more cards should work.
SOI is another kettle of fish. Being a really recent set a few different people are working on getting cards working and as usual there are a few things that don't work but as the community here plays with it and gives feedback on the cards they are using and what is not quite right it all gets improved.