Hi
I have a m3izero flashcart, (one of the old ones that doesn't have "gmp z003" written on it) and a a dsi with 2 year maybe i don't know which version of the firmware it uses.
On the flashcart the firmware is M3 Sakura 1.47 or 1.48 i guess. I know that the M3 is a flashcart is not updated...