The App and control of headphones has changed dramatically since the summer. Noise Cancellation seems to no longer be a thing. Now, the only control is "Hear Through" and it does not seem to work the same. I have vibration coming through headphones with any footsteps I make that I didn't have in the past. App locks upon clicking link for User Manual. All Firmware and Apps claim to be up to date. I did an app uninstall and reinstall, still can't access User Manual.