http://developer.sonymobile.com/201...qs-vanilla-android-xperia-s-project-download/
look here
Open source download for Xperia™ Z and Xperia™ ZL (Jelly Bean, Android 4.2.2); software version 10.3.A.0.423.
See : http://developer.sonymobile.com/downloads/xperia-open-source-archives/open-source-archive-for-build-10-3-a-0-423/
Hello, I have an LG optimus L3 ii E430 smartphone with: android 4.1.2 jelly bean, kernel version 3.4.0
I really want to upgrade it to 4.2 or 4.3 jelly bean
is that possible?
Sony Mobile has commenced the Android 6.0.1 Marshmallow rollout on the Xperia Z2 and Z3 series. The update is currently live for the Xperia Z2 (D6503 only), Xperia Z3 (D6603 ony) and Xperia Z3 Compact (D5803 only). The new firmware has build number 23.5.A.0.570, which incidentally is the same as the recent beta release.
Sony has only pulled the Marshmallow trigger on those variants that are part of the beta programme, perhaps in an effort to start getting the update to the public in a timely fashion. We would expect other variants to see the update shortly after. The new update includes the Camera 2.0.0 user interface and February Android security patch level – some screenshots can be seen here. Please let us know your impressions below, once you’ve had the chance to update.
Source www.Xperiablog.com
PTCRB already certified 23.5.A.0.570 (Android 6.0 MM) for Xperia Z2 Tablet (SGP521)