IMPORTANT: This solution does not apply to Sony® TVs, Blu-ray Disc® players or Media Players powered by Google® TV.
The Sony Internet video devices do not require a Google® registration to use the YouTube® app.
- Reset the TV by unplugging it's power cord for about a minute, the plug it back in and turn it on.
- Download and install the latest system software (firmware) update.
After the update is complete, log in to your YouTube account and use the app.