I built it my own firmware…
https://1drv.ms/u/s!AlfcaNEgt8LwinlYnF0fvG18qSP8?e=DgpEoe
Please try to download and copy to a SD card (with nothing else on it). Power off your Ender 5 pro, plug in the SD card, and power it on. Tell me what you see.
Sorry for my tardiness…I had a very busy week. Tonight I will make a video on how to build your own firmware (easily) and upload it. It will be simpler and shorter than other videos.