KD49XH8916 nowtv apps no sound

[LiviaVass]

Help! 
new Bravia KD49XH8916 tv apps worked fine. After update, apps had no sound, tv still had sound. Did device reset, fine after. Then suddenly, no sound again. 

i don’t want to do Reset every time. 

Any solutions? Or hope of new update to solve the problem?

Thank you! 

[Joe_Dohn]

Are you referring to the v6.4960 update? Have you tried clearing the cached data instead of resetting? (under Device Preferences - Storage - Internal Shared Storage - Cached data)