Everytime i try to edit, i type it up & won't post, so i'll have to double post:

I extracted the RUU_sign.nbh from the official exe update, renamed it to TITAIMG.nbh, put it on my sd card, it starts to upgrade, says:

BOOTLOADER - OK
SPLASH1 - OK
SPLASH2 - OK
EXTROM - OK

OS -

The progress bar starts to go up, then at the top i get red text saying "00018003 TITAIMG.nbh - FAIL"
& at the bottom "Update Terminate // UPDATE FAIL"

Please help =(