are you referring to the 3ds instantly turning off without an sd card?
you skipped the ctrnand luma part of the guide
when did you install boot9strap?
Hold Select on boot up (with SD). What version of Luma does it say? If 7.1 then follow https://3ds.guide/updating-b9s and make sure to follow the steps that copy the boot.firm to the CTR-NAND.
Follow the section of https://3ds.guide/finalizing-setup that has you copy boot.firm to CTR-NAND. There seems to be something wrong with the copy you have in yours.nope its luma 8.1
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And correction : When I launch the 3ds without sd card its telling me an error and tell me to press any buton for close it
its work now thanks ;dFollow the section of https://3ds.guide/finalizing-setup that has you copy boot.firm to CTR-NAND. There seems to be something wrong with the copy you have in yours.