How to upgrade Android OS version on new tablet?

The customer just bought a new Samsung tablet at Office Depot that is running KitKat.  They have an app that needs a newer version of the OS.  They went to Settings > Software update and tried to get a newer version, but it said they had the latest.

In brief online queries, I am not finding an easy way to install a higher version for them, as though it's not allowed.  On a Windows 7 PC we can (obviously) upgrade to Windows 10 in most cases.  Likewise, can we upgrade a new Samsung tablet to Lollipop or Marshmallow or Nougat?  If so, exactly how would I do this for my customer?  TIA
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Brandon LyonSenior Frontend DeveloperCommented:
The current version of Android is 9.

New operating system versions aren't always able to work on older hardware. If the OS says that the tablet is on the latest version, that means it's on the latest version that the tablet can run. Unfortunately most Android devices are meant to be throw-away devices that only last a couple of years :(

It MIGHT be possible to root the tablet and apply a custom ROM to it, but I wouldn't recommend that.

Office Depot shouldn't still be selling tablets that run Kit Kat, as that OS version is over 4 years old at this point and was deprecated over 2 years ago. I recommend returning it. If they give the customer a hard time, tell them that they're selling outdated and unsupported hardware.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.