When I was doing the cart dump thing for installing a9lh, my 3ds suddenly just won't let me use it I tried removing the sd card, the cartridge and using recovery mode but it just says "an error has occured. Unable to update. blah blah blah..." so can someone please help me? It usually freezes when I try to use the browser or just the upper case things. (I used mh4u for the cart) 
