Okay.. So I was CFW-ing a N3DS XL Hyrule Edition... but it was on firmware 10.3.0-27U... and of course, it needs to be downgraded first.. While on the process of downgrading, "An error has occurred. Please turn off the power button." or something-like-that 3DS error pop up appeared. Then, when I opened it, some applications such as System Settings and Browser aren't working anymore... Any fix about this? Thanks for the help guys!