I’ve personally rooted many devices, and I’m not a Linux guy. Normally, if you can use a one-click rooting app, then that’s the way to go. The key is not to be afraid of the process. Rooting is just the first step. Then, you need to load the updated firmware.
Otherwise, I suggest simply ask a 16-year-old boy if he knows anyone who is capable of doing it. Most techie boys that age aren’t afraid to tackle it and could get it done in no time by following online instructions.
Reading some of the sites that do this you see that they even can overclock the tablet and give new capabilities to it without throwing it away. What we are doing here is trying to upgrade the tablet without throwing it out for a new one. Samsung has quit upgrading to get people to buy a new one every couple of years. Most of the sites talk about upgrading their phones to new operating systems and their phone is suddenly better.
I don't know if people notice, but after awhile, their "new" phone starts slowing down and getting more "glitchy" as time goes on, until you finally get disgusted and buy a new phone. Chances are what they are asking the phone to do could be done, but only with a new OS.
The OS my tablet has won't overclock, but getting the OS a couple of numbers higher allows a 1.2 ghz to 1.4 ghz turbo upgrade. Certain camera chips can be ungraded to higher megapixels, ect. The phone or tablet you have has usually been hobbled with software, not the hardware, and you might stretch the useful life of the device by years if you are able to change the OS yourself. It was well known the first Samsung tabs had higher capability that the original software gave it. Just like my desktop had a 3.2 ghz dual core chip and a limit of 2 gigs of memory, I have overclocked it to 3.8 ghz and reflashed the Bios to accept 3 gigs of memory. The BIOS image was modified by 3rd party people. You can put 4 gigs in it and it recognizes it, but it only will use 3 gigs. That allows me to keep an almost 20 year old MB and run even Windows 10 if I choose to. I have an I3 and an I5 laptop and the desktop is just as fast for what I do. I'm still on 7 just because I don't like 10. I think many of the 2-3 yo phones are thrown away that could be upgraded to the newest OS and extend their usefulness. many of the newest features, people could live without, like fingerprint security, a new camera from 10 megapixel to a 20 megapixel. What difference in the real world are we talking about? If you have the money,...great, but many would just as soon keep their old phone if it would just run faster and do what it did when it was new.