Question [Q] Android 4.3 or 4.4 to p5200?

Hi there. Been searching the web for a while now but cant find any answer to my question(s).

Well... i bought a GT-P5200 16GB (XXUANB2 - Kernel: 3.4.34 - 2546509) some weeks ago.
I wanted to use it for mirroring too. In Web i found some sites telling its possible to use Miracast but mine seems not to support it.

The Question i have is if i can upgrade my tab to 4.3 or 4.4 (Mirroring Support?!) without having probs with the tab?
Or does any has a different solution how i can get miracast/widi running on my tablet?

All help is welcome. Thanks a lot