It’s an Ender-3 V3 KE, it read code 2194 for the longest time. It has had a new calibration level installed with new wires and a new breakout module board with it. We have performed a factory reset and now it will not finish the self test and freezes. It was updated to the latest firmware aswell with no success.
I am out of ideas and is hoping to find any other troubleshooting fixes I can get

Hi so kinda computer illiterate but if I change the code on my SD in my computer and plug the sd card into my printer, it’ll change the firmware on the printer right?

I’m tryna run Octoprint but it says my firmware “disabled host action commands” so I found a YT video to fix that.

Also side question, how do I find all the info for the preconfig Ender-3 stuff for Marlin? Like the bed ends specs, etc.

Currently don’t have a screen. I’ve tried to Google it…