Works on my daughter's newish Phat but didn't work on my old V4 one.
Interestingly alite also works, so you can change it from the Supercard menu too.
"I've write code" - Tally
".. there's a new game out that teaches kids how to kill prostitutes." - Shane's Mom
"I would rather suck dick than eat a Krispy Kreme donut." - Flare