My Bixby crashes when I try to set it up. It shows the region selection window for a second and then crashes. I've tried Uninstalling updates, clearing cache and app data but it was futile

Hi guys. My phone shows SMG975N in model number and SMG975F in service provider. I need to install stock Samsung firmware. Should I download the one for SMG975F or the N? Also tell me what happens if I download the firmware of some other country