Is there a way of testing whether the Bravia engine is working properly? I've gone with a rooted 4.3 firmware, but have no idea whether the engine is working or not. The option to switch it on and off is in the main settings, but given I couldn't really tell much difference beforehand, I've no real way of knowing if it's working or not.
Also, I don't suppose anyone has a copy of the original demo video that came with the phone, that they'd be kind enough to upload to Zippyshare or somewhere similar. I've played other videos, but I'm familiar with that one, so it would be really helpful to test now I've updated to 4.3. I deleted mine some time ago, and forgot to keep a copy.
Yes there is
Flash SuperSufix via recovery
You'll have root now.
Flash .201 kernel again
Enjoy your Rooted stock ROM with all the benefits of Locked bootloader without downgrading to .257 and flashing new ROM.
You will find most of your needs under this forum