I recently got this Samsung Galaxy A9 phone and it has the version 4.4.2. I want to update it but there's no option to update it anywhere in settings. It's missing in the "About Phone" tab.
It's new from a retail store. I just used that app and it looks like it's not rooted, since there's no root access and SU wasn't found. I noticed there's a "Custom build version" tab in the 'About phone' section though. Does that mean anything?
What csc and baseband is on the phone. The A9 was launched with Lollipop, I believe, so I'm curious why KitKat is still on it. Do you have PC access? If so get Samsung Smart Switch installed and see if it recognises your device.