Ender 5 Pro - No linear acceleration - problem with software update

[CZOŁG_Średziński]

Hello Everyone!

I am new to 3D printing.
I have a stock Ender 5 Pro with BLtouch.
My software version is 2.0.8
This version does not have linear acceleration.
Due to lack of linear acceleration, the corners are bulging, and it makes quality of the prints very bad.

From what I learned, to enable linear acceleration, I have to update the software to at least version 2.1.1.

The only info that I found regarding it. Says to download Marlin, modify and compile the software myself (???). I know NOTHING about coding, have NO clue how to do it.

And it seems like there is NO already compiled software. And every user have to do it by themself (???).

Am I missing something obvious? Or updating software on the consumer-level printer is such a crazy town?

Can someone pinch me?

Best regards
Peter

[CZOŁG_Średziński]

Ok I am making so progress, I’m following this tutorial

But one of the steps require the information about stepper motors. And as we can see my mobo have no markings.

Any idea where to find this information?

[CZOŁG_Średziński]

NVM I just learned that this version of MOBO is old. And its impossible to make it work.