3.55 huh. Mine's model #cechg01 so I think it is downgradeable That's how I got onto the 2.3 thing in the 1st place. I'll try 3.55.
And thanks to WhichSystem for the reply but that's exactly how I had the USB stick set up ("properly setup") which is why it puzzled the hell outa me when System Setup came back and told me that no valid pup files were found.
I'll keep on pluggin'.