Well, do it yourself would be the best, but if you do send it in it would only get sent back without repairs. Honestly if that's the problem you should make it look stock, maybe no sd card in it? And try itIf I send my new 3DSXL to nintendo with boot9strap installed, would anything wrong happen? I don't know if they will know if I installed b9s and take my new 3ds away. All that I need repaired from them is a cracked top LCD screen