Big_Mike_4488

Alright, well, I am a full time college student so I switched cars for a few days with my father so he could take it in to get the recalls taken care of. (He works right near the mazda dealership. I told him to ask them if I was up to date on flashes. When my dad and I traded cards back, he told me the dealership said they gave my car the latest flash which was "B 39.4" I don't know too much about the car being as I am new to the sports car world. Is this flash equivalent to the "L, M, or N" flashes that I have read about here? Thanks!
(I've got a 2004 6spd, if that makes a difference)