I got around this by just digging and finding the file. But for HBOgo, I had a friend download it on their phone and then email me the file. If I had a way to post the file I would.
FYI, HBT on the fire isn't as good as on the phone (not really optimized for it) but still way better than the web interface.
First they came for my Four Loko and I said nothing, then they came for my Double Imperial Espresso Stout.