Like the Xperia S, Sony has posted its first Android 4.2 AOSP for its latest flagship, the Xperia Z. An Android AOSP is a means for converting the Android software stack to a vanilla Android state and to further this cause Sony is pursing a separate AOSP project for the Xperia Z.
Currently, most of the core Android features of the smartphone are running in a plain vanilla Android environment. This includes SD card support, Wi-Fi, Bluetooth, GPS, and the LED light. The camera is also working internally, but the code is based on proprietary binaries, which means that Sony cannot publish it. The same is true for the modem. This also means that one cannot flash the AOSP in a hurry and expect the phone to operate within standard parameters as the project is in a very early stage.
Sony also has its hands tied to a certain degree because part of the code is from its developer partners which is not open source. The good news is that Sony says that it will release the binaries for the NFC module in the near future.
The AOSP project at Sony is maintained by senior software engineers Johan Redestig, and Björn Andersson and it is available for users on the company’s official GitHub repository.