Updating mobula 6 ELRS 2.0 to 3.0

I found this on happy models website its code for the mobula 6 elrs 3.X will flashing this to the drone on betaflight 4.3.1 configurator 10.9.0 work i want to use it with my module thats on 3.X any advice I really don't want to downgrade my moduel to 2.X. thx.