Maybe I missed it, but I didn't see where he's getting updated GPS data from. Does the company still provide it? Is it fairly standard and there's another sourc

Maybe I missed it, but I didn't see where he's getting updated GPS data from. Does the company still provide it? Is it fairly standard and there's another source? I think it's a very cool project, and amazing that he's able to read/write the data, but I kept waiting to find out where the updated GPS data came from.