Well long researches have led me to a solution.
In this thread someone said they were using the Sony remote app to switch 3D… I downloaded it, and there is no such option.
Basically, on any input, you can call up an “action” menu and you have a 3D sub-menu to toggle 3D on and off.
Ridiculously enough, when you’re listening to content from an app, the action menu does not contain a 3D sub-menu.
So googled around with different keywords I kept ending up on threads that said to press the 3D button on the remote.
But I don’t have a 3D button on my remote… I looked 1 million times just to make sure i didn’t miss it.
Then some threads recommended the use of a harmony remote, to program a 3D button.
I tried that too, but there were no 3D button available to be assigned.
AND FINALLY, I ended up on this post:
http://community.sony.com/t5/facebookforums/facebooksingletopicpage/facebook-app/464566106927205/message-uid/566745/tab/board
Well, basically, you add a second Sony TV to your Harmony device list, just so you have a 3D button.
The Sony TV is actually an older model… because back then their TV remote DID have a mother flicking 3D button.
I was like WTF, whatev’ u know… but GOD DAMN IT, it works.
Now magically, I press 3D and it opens up a small menu to ask what type of 3D (in my case: SBS) and it WORKS.
I really can’t understand why it would be so complicated that you have to find a work around involving the mandatory use of an external device (Logitech Harmony remote) and the use of a previous model remote control button, instead of just allowing the 3D sub-menu in the god forsaken “action” menu.
Anyway, I just thought I’d share my solution so if any n00b like me can’t figure it out, then this is my testimony.
Also I wrote an insult letter to Sony, they have not responded at this time.