cyclods new firmware

i want to know about the version 1.55 i have the beta 3 of 1.56 that let me play the new mario but will it stop working if i put 1.55

Yes, Mario will probably stop working if you put 1.55 on.Why do you want to go back to 1.55 instead of 1.56b3?

i wanted to see if the realtime save would work