Default [Q] question regarding Screen mirrorring in Galaxy Grand..

Hi. I have a Galaxy Grand Duos with Android version 4.2.2. I don't have a builtin option of Allshare Cast in my mobile. But once, I had a update for Allshare cast. Does this I have allshare cast on my mobile.....? Is it disabled?
Attached below are the links for the scrern shots.

But you see, I don't have allshare cast option under settings menu. ....
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2014-05-04-16-53-33.png
Views:	45
Size:	91.1 KB
ID:	2724905   Click image for larger version

Name:	Screenshot_2014-05-04-16-51-31.png
Views:	39
Size:	67.6 KB
ID:	2724906   Click image for larger version

Name:	Screenshot_2014-05-04-16-48-57.png
Views:	40
Size:	76.6 KB
ID:	2724907