Hammond XB-2, V2.0 EEPROM vs 1.2

I have an XB-2 with the V1.2 EEPROM. The only manuals I can find online are for V2.0. While waiting for the 2.0EEPROM to return to the Syntaur site, can anyone direct me to a manual for a V1.2 Hammond OR some information on what’s different between the two?