Anecdotally, vendor released Android 7 for my phone some time spring 2017 - not the worst case. Although, OTA update fails. The only path to upgrade my phone is

Anecdotally, vendor released Android 7 for my phone some time spring 2017 - not the worst case. Although, OTA update fails. The only path to upgrade my phone is manually flash OS image and lose all data. I'm still running 6 ¯\_(ツ)_/¯