I tried searching the thread, but I only found one guy who had older firmware and the link he gave was dead.
However, I got it working last night!! I reflashed the 2.8 firmware again and then unplugged the player from the power source. After letting it sit and plugging it back in again, it actually played a blu-ray! It's till a little temperamental, so I'd still like to find the 2.7 firmware if I can.