No luck unfortunately.
Even with generic 4:3 mode on I can’t get a picture on 1600×1200 or 1920×1080. Oddly 320×240 at 1920×1200 is the only one that seems to work in that generic mode. I think I’ll call it a day until I get my RGB bypass installed.
While I’m a little disappointed my Sony kd55x8500c has been fairly forgiving with what the OSSC throws at it, considering it was a blind buy on sale well before I picked up my unit.