Hi Greg,
This forum is active, but sometimes too active that posts do get missed. Unfortunately it seems your post has been missed amongst the vast of new posts.
We try to help as much as possible, but remember, this is a FREE SUPPORT site so we are giving help in our spare time. No one here gets paid to help and post replies so we try to do our best.
I did a quick search for our Hynix chip model and found this -->
http://www.semiconductor.com/resourc...sinumber=19737 which states it is an 8GB chip. However, that's not to say that the manufacturers are now getting really sneaky and printing incorrect information on the memory chip. This has been known to have happened so don't be surprised.
The other issue you're having is that it blue screens after 4 hours? Is that right? Is that happening all the time or doe sit blue screens straight away?
The other question you asked is about firmware. I wouldn't recommend trying to flash your player with another firmware right now. There is too much of a high risk in having a 'dead player' as a result of it. All you need to do is look at the "Dead Players" section of this forum to get what I mean.
Hope that helps.
Reply to my questions when you can.