have a new 3ds that has a9hl on it. wifey used it came back with the black screen of death. tried the button combo to boot into decrypt9 but no luck, i think i change it to a differnt combo but cant remember, is there a way to edit the button combo via pc? i do have a nand back up. i also tried the button combo to force system update but says my system is up to date... thanks in advance