Downloader code 6468112 is commonly associated with IPTV Smarters setup searches, but codes can change and should always be verified at the destination screen.
What to check first
A code does not include a subscription, channels or premium access. It is simply a shortcut to an installation resource.
Practical Firestick advice
After installing, only enter valid account details supplied by an authorised provider and keep your Firestick updated.
Use IPTV apps and playlists only with sources you are authorised to access. A player app does not provide channels by itself.