Interesting - sound like a samsung problem. Returned the Samsung tablet and purchased a modern, fast Windows 10 PC with built-in Bluetooth 4.0. Downloaded Zwift on the PC, mobile link app on my phone and everything working well - finally. Total time invested (includes swapping cassette to an 8-spd and figuring out what spacers work): about 10 hours! As for the firmware upgrade issue - still having that. Even tried to use my wife's iPhone and it fails to upgrade, time after time. Will send an email to Wahoo.
