This tutorial will help you flash some real firmware on to your stock TronXY X5S control board, using a separate Arduino Uno board as the programmer. It’s not meant for any other board, period. Just the stock one specifically. No others. If you try it on a different board and it doesn’t work, don’t say I didn’t warn you.
It is also written under the assumption that you're running Windows. If you're on a different operating system you'll need to take the appropriate equivalent steps. If you don't know how to do that you'll need to find a different set of instructions. :)