I’m attempting to update the firmware on my brand new CR-10S5, however my issue currently is that Arduino is unable to communicate with the printer. I swapped the USB cable with a different one, but it’s still not communicating. What other ways can I fix this so I can get this new firmware online?
If its a CR-10 and not a CR-10S you need a bootloader. If you have a bootloader then try updating the drivers. We have the ones that are known to work on our website in the knowledgebase.