YEAHHHH !
I spend all night to find a solution.
And it's ok.
I sell the solution 50$.
No no stop i joke
So i saw only the m3 cart in dsi menu but not start...
It was because a bad flash not the sd !
But another issue when i want to reflash the led is always off .
I thought now...
sorry my bad english
yes i see the m3 in the menu.
i just try to say if it was a micro sd issue : The flash would not have succeeded with this micro sd and so i will not see m3 in menu.
i don't have another micro sd
i don't understand i follow all instructions.
i see m3 adapter in dsi menu
but when i start it the dsi show "An error has occured. Press and hold the POWER Button to turn the system off. Please refer to the Nintendo DSI Operations Manual for details"
although i ended up accidentally changing my nand with no way of going back bc i didn't know you needed a gamecube controller to restore it (i have a wii minus/1.1, which doesn't have gamecube controller support)
and if i find the sd card i have my NAND backed up on, i can not only restore the NAND if i solder the right part in, but i can also put my NAND on dolphin, then i can play dolphin online, like PMEX Remix or MKWii Riibalanced