Sony Xperia Z1 Unlocked Black "update android version" Questions

...update the jellybean software on my android phone? I am currently using jellybean 4.1.1 and I understand there are newer versions of jellybean available. It would depend on the type of Phone you have ...

...update their Galaxy Note N7000 to Android 4.2.2 Jelly Bean with special features such as colour inversion, notification drawer, lock screen shortcuts and custom Quick Settings. Using Slim Bean ROM, ...