There is a way to remove it. I brought boat to the dealer and they didn't have, couldn't find, or broke the cable to flash the unit. They took it out and drove it to Moomba factory when they were picking up a new boat. Not sure if you removing it yourself would void the warranty but it can be removed to update. It does keep track of hours, went from 250 to 304ish after update.

PS. Another dealer didnt have the cable either so I dont know why they are hard to come by.