I tried doing it through the nvflash command line ("nvflash --save bios.rom). Funny enough, I get the same 2 high pitched sounds before I get an error.
Here's what it says (I had to printscreen and paste this since the message goes away so fast):
EEPROM ID <20,0000> : Unknown
ERROR: Supported EEPROM not found
Clearly this is the reason for the original error. Any ways around this?