EVAX-100 Customizable Audio

Is there anyway to overwrite the current evac messages associated with the EVAX-25/50/100 panel?

AFAIK the messages built into the EVAX panels cannot be changed by the end-user. I’ve read the manual for the 25/50/100 and there is no mention of recording custom messages. It may be possible with a custom EEPROM but that may require a board-level modification that may not be worth it in the long run.