Okay kiddo, do you know what software is? It's like the programs and apps that you use on your tablet or phone. Sometimes, the people who made those programs need to make changes or fix things to make them work better.
So, they create a new version of the software that has those changes and fixes. This is called an update.
Now, imagine if every time there was a new update, you had to delete the old software and download the new version all over again? That would be a lot of work, wouldn't it?
That's where the software update system comes in. It's like a helper that makes it easy to update all your programs. It checks to see if there's a new update available and then downloads and installs it for you.
This way, you don't have to worry about manually updating each program every time there's a new version. And that's why it's important to make sure you keep your software updated - so you can have the best and safest experience possible!