Why am I unable to update my Samsung Galaxy Ace 2 to KitKat?

[Graynoldus]

unable to update samsung galaxy ace 2 to kitkat

when checking for software updates, it says latest software installed but is only version 4.1.2

 

[Rukbat]

Re: unable to update samsung galaxy ace 2 to kitkat

Then that's the latest version your carrier has made available for that phone.