I have an Old 3DS and I updated A9LH on it using https://3ds.guide/updating-a9lh guide. I normally boot into an emunand. But from what I understand it should still work? When I take out the SD card the blue light turns on for like a second then goes off. With SD Card in it should still boot right? Edit: for anyone that stumbles upon this in the future. You have to do the CTRNAND portion from Sysnand not from Enunand.