I May have figured it out: Since i'm using a USA Version of the game in a European Wii, (with region locking disabled as seen before) i think that the problem is that i'm using a USA Version on a EU Wii, in fact, when i made an iso this time with an EU Version of the original game, IT WORKED...
So, i was trying to play newer SMBW but when i click "play" on the Wiiflow 5.5.3 loader the game simply gets stuck in a black screen even before the controller safety screen
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if anyone is wondering, i'm using a usb to load the game, the game is a USA version, and i have a European wii...
It was set to unlocked, i set it to locked and then unlocked and now, it's working, weird. Also now that i'm able to do the backup, bootmii found many bad blocks, is it something i should be worried about?
Soo, i was trying to make a nand backup with bootmii, but, the backup dosen't even start, it sends back an error saying that there's no space left, but there's still 1gb+ of space left on the SD Card. Please help