Oops! The high scores not being saved WAS my fault. I have put an updated version of firmware on my website that will get it working for you. You won't see the firmware version anymore, and the first video sequence will have messed up color, but your high scores will work.
The Pin2DMD splash screen takes longer than the Chroma-Color startup. I didn't want to ask lucky1 to change that.
By the time the splash screen is done, the firmware version screen has already finished being displayed, and the first video sequence has started. The Pin2DMD firmware missed the first palette, so the first video will have incorrect colors.
So, in the v91 firmware, I made the firmware version screen display longer. This fixed the above issues, but it also meant that when the PIC tried to read the high scores from the EEPROM, the AV firmware wasn't ready. I will spend a bit more time to try to properly fix this, but for now, v92 will get you up and running. Sorry for the trouble.