Although the Xperia SP isn’t yet in the list of devices scheduled to receive the official Android 4.4 goods from Sony, that’s not to say that the SP can’t still benefit from some rather substantial OEM love. Early yesterday, Sony began updating the Xperia SP to firmware version 12.1.A.1.201. While it’s not KitKat, it packs quite a few bugfixes over the previously released 12.1.A.0.266 build.
Just like the previous build, 12.1.A.1.201 is based upon Android 4.3 Jelly Bean. But according to Sony’s update page for the device, it brings an enhanced user experience, improved battery life, and software performance improvements. This, however, doesn’t tell the whole story, as it it seems to have fixed quite a bit more than the official changelog lets on.
For starters, 12.1.A.1.201 seems to fix many issues people were having such as the RAM bug, as well as problem with device overheating, battery usage, color LEDs, screen flickering, touch screen responsiveness, and more. Furthermore, users seem to report an increase in device speed after updating. But even after the update, Bravia Engine still seems to be broken, so hopefully this will be addressed in a future update. To learn more about the 12.1.A.1.201 update itself, head over to Senior Member Amin.HVS‘s update review and Forum Member Rushaan™‘s changelog threads.
So when can you install the update? Well, it’s currently making its rounds through various regions, so there’s a very good chance that your device will receive the OTA soon if it hasn’t already. That said, not every device in every region will have access in the first wave. Luckily, Forum Members Jozinek, chewlohseng, jnocomski, and UltraWelfare have pitched in to share FTF mirrors of the firmware, which can be flashed using Sony’s FlashTool.