You have to contact Shenen directly for download links according to the Amazon listing. However, finding a contact email for Shenen proved difficult when we just tried to find one for you. We'd advise looking in the paperwork that you got with the sat nav (assuming you still have it) because the contact number or email address is probably stated in there. Whatever you do, don't download map updates from websites if you aren't certain that they're the ones you need. You can end up downloading all sorts of dodgy map software that way.