Hmmm, tried many variants of the URL with the "extended" keyword, so far no success. How you get the "root" URL? Are you sure there is extended POI for the device that gives you those URL's?
On a good note, here are the .ftr, .fsp, .fda, .fpa (which are easy to figured out) Need to get building and speedcam next.
Spoiler: .
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