I've tried that version of the app but it needs to launch in Portrait mode (even on a tablet where it is being used in landscape mode). This causes it to crash on a TV that doesn't support Portrait mode. I'm guessing that the app on the Fire TV is different.
I was able to install on LG Google TV, was able to login to my provider Comcast, but when I try to play the video, "it loads, shows an error popop" and goes back to ESPN app screen. Looks like there is some other pre-requisite to play the watch espn app on Google TV.
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