Recently Motorola Nexus 6 got OTA update with March security patch level but it got more noise from users due to it breaks the Android Pay and Google acknowledge issue. It should be under investigation.
Apparently the company can’t find any easy solution still now. So it has started downgrade OTA update to Android 7.1.1 to Powered Android 7.0 Nougat operating system.
Hey! All there was recent OTA update Android 7.0 that is causing confusion for some Nexus 6 users. For those of you that want to Guarantee future OTA updates , you will need to get back on Android 7.0 supported track . If you experiencing issues after accepting the 7.0 update, please factory reset your device to help resolve any problems. For any Nexus 6 users want continue flashing / sideloading feature builds, you can stay on7.1.1 and continue to do so.