Recently, I wanted to use the application super dump to get an iso for my backup loader. But to use this, you needed to be on rev 13a. Since I was on rev 14 I just ran the rev 13a installer and everything worked out fine. I was wondering if this is the correct way to change revs or if by doing it this way, I am ruining my wii.
No that is the correct way to do it. It simply overwrites one another on slot 249