Can it do something bad for me? Did it somehow messed up something in my SD or NAND? Did it fully removed everything what has been downloaded (including ticket)? I've cancelled it probably by pressing B button to go to main menu. I've checked my 3DS software in system settings and the game that I've been downloading wasn't there, so FreeShop probably removed everything (which is good) but I'm asking just to be sure. I don't want any leftovers from the previous downloads.