Ender 3 v2 won’t print or home

So I just installed a sprite extruder on the printer at my school and updated the firmware and it won’t home or print properly it homes the extruder and the x axis but not the z and it won’t lose just raise so I’ll add a video and keep reaserching but please help me out also sorry for the background noise I am right next to the metal shop

I had a similar problem with my old Ender3 v2 with a sprite extruder. It turned out to be a faulty
BLTouch. From your video I seed that you are still using a micro switch for the Z homing.
Could be the micro switch is faulty or not plugged in correctly.
What version of firmware did you install? If the version for a BLTouch / CRtouch, this could be you problem.

Bill

If I do t have a leveling probe what firmware would your recomend

And is there a way to tell if the switch is busted and I feel like it wouldn’t be the switch because the switch wouldn’t have annything to do with the x axis not moving down but only up even when I use the move screen idk I have never installed one and it seems like you have had some experience with this and you probably would know more than I would

Thanks for the help I got it fixed it was firmware it had a bl toutch firmware built in and that’s what was causing the problem