as the title states. i went to follow the instructions for updating the n3ds b2s, and instead of waiting to update luma later i had already copied the luma 8.0 boot.firm to the nand crlsys. now the system acts as if the power is low. power button while start is pressed or select does nothing. the power light just turns on for a brief second then turns off. is there any other way to load a boot.firm off the sd card with b2s instead of the NAND. UPDATE: seems the SDcard is 1st boot option if it's installed. deleted teh boot.firm and renamed the luma 7.1 boot.firm as it should. system booted like normal.