liftmaster Chamberlain Garage Door Opener Transmitter 300MC "reprogram overhead" Questions

reprogram an old style 61LM to a garage door with a learn button? Thanks! Th?? Liftmaster 61LM remote ?? th? equivalent remote t? th? Sears Craftsman 139 model number listed above. It h?? dip switches

...reprogram an old style 61LM to a garage door with a learn button? Thanks! This Liftmaster 61LM remote is the equivalent remote tο the Sears Craftsman 139 model number listed above. It ...