So I have Windows 10, can confirm that when I updated to Version 2.0, that the eeprom was greyed out. m115 returned eeprom : 1, so it was enabled, however still not able to access it.
What I did is went to the configuration tool online, load my old configuration.h file so it has everything that my printer currently has, and redownloaded it, re uploaded and the eeprom option is no longer greyed out.
Problem is, it looks like my eeprom was still intact, but I cannot confirm because I didn't think about losing my eeprom settings previously. Oh well, it was time to calibrate from scratch again anyway....