I ran into the same issue on mine on installing it tonight. I turned off the machine, unplugged and re-seated the connection. Then it started to work. Not sure what troubleshooting steps you took but hopefully this helps.
I wonder if there is an issue with the screen not getting its firmware update. Does anyone know if the screen and be plugged into the computer to get its update?
Finally worked. Not sure why this time was the charm but it did.
Thought I did it the same way the past 15 times.
Process:
Go to the download center, eco systems, nebula smart kit and click on the 3D Printing Firmware; Download and Extract.
Take the SD card that came with the machine format it in FAT32 with 4096 for unit allocation.
Only put the ender 3 *.bin file on the card.
Put the card in the machine with the Nebula Smart Pad attached. (DO NOT HAVE THE G SENSOR ATTACHED)
Turn on the machine and follow the prompts on the Smart Pad.
There are videos out there, even ones that Creality recommend to follow that have you attaching the G Sensor and following prompts on the smart pad before turning on the machine, that do not work appearently.
im having this same issue, same error. same failed prints. i could only upload the bin files your way. maybe theres another way where the printer and the nebula pad will have better understanding of each other. if you get any further on this im working on it today
I will add to MikeTX’s instructions. Mine refused to flash until I did exactly what he said and did not have the USB stick inserted into the Nebula Pad. Until I removed that and followed his instructions it would get stuck on “Connecting…”.
Layer shifts are bad vref settings on the stepper motor I remember reading about it on reddit I think it was .6 on the y I’ll see if I can find the post again for you.
As for the errors do you have arc welder enabled as klipper doesn’t know g3 comments and even if you put it in your config to enable klipper just converts them back so it’s a bit redundant
Thank you very much, I was desperate with my ender 3 v2 neo with the nebula kit I was having this problem only this post helped me solve the problem thank you very much