I followed Plailect's guide to update A9LH and everything went without errors until I turned off the console and removed the SD card to delete unnecesary files. After I reinserted it and turned on the console, boom, black screens. No sound, no nothing. I tried everything, no sd card, formatted sd card, select at boot, hourglass9/decrypt9/godmode9/ nothing boots... just two black screens. The console is a N3DS XL updated to the latest firmware. Is this a brick or what?