I followed the instructions to a T. I double and triple checked each instruction. I got past the homebrew and boot9strap but then it told me to "take out my SD card" EVEN THOUGH I WAS ON THE NEW 3DS GUIDE! I CANT TAKE OUT MY SD CARD CUZ ITS A MICROSD! It said "your device won't turn on. Thats normal. Take out your SD card...". Ive reached a stalemate. The light turns on then goes off. I'm shaking right now i'm so sad and angry ;-;What did you get up to? If you installed b9s make sure you have a firm file on the root of your SD card. If the blue power light goes on then off, you are definitely not bricked. If it stays on, you may have problems but not absolutely for sure.
(lol, sorry, that emote just makes me laugh) 