while trying to open the system setting, it shut down 3 times. yes, without any warning. the firmware is 11.0.0-33u
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edit : i mean no, i deleted the files as instructed, only have nintendo 3ds and luma folder
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yesAlso, did you put back all the files you had before on the SD card? Especially the "Nintendo 3DS" and "luma" folders.
edit : i mean no, i deleted the files as instructed, only have nintendo 3ds and luma folder