This is the firmware for the ender 3v3 se to work with nebula pad, it used to be on the website but dont know why creality removed it. I've contact them throught email and finally got the file. Hope this will help. you take the file that have name in the picture below, put it in the SD card and then put the SD card inside the printer (not the nebula pad) then turn on the printer wait for the fw to install THIS FILE IS FOR C13 ENDER 3V3 SE MOTHERBOARD NOT THE C14 https://drive.google.com/file/d/1TxBPB-95KBKr5DBSWHTpn3OfGX4nIUEK/view?usp=drive_link