Firmware bugs for KD-49X8005C

[KristianPopov]

Hi, after update firmware with V.3.155, my TV Optical output is stoped play 6 chanel audio(only 2 chanels).I probe with new version 3.169 and problem is the same...Can i Downgrade the firmware with V.2...?I make Hard Reset the settings and nothing...And What can i do???

[webvamsi666]

Hi, 

Mine is now PKG2.645.0052EUB, I dont have any issues after a reset. please see my therad i listed few issuws and solutions here

And I spoke to Sony they didn’t recommend to downgrade TV as this may Brick it.. 

Thanks.

Vamsi