I have the same problem with my XP-15000 with Epson firmware 20.41.NW99Z9
 
	I have tried 6 times to install firmware with same results:
 
	At 99% completion, I get the following pop-up message:
 
	The Printer's firmware was not updated.
 
	The firmware update did not complete. Try the following, then click [Retry].
 
	- Ensure that the printer is connected (USB/Wi-Fi/Ethernet) to the computer.
 
	- Ensure that the printer is powered on.
 
	 
 
	Click [Retry] to perform the update again
 
	Click [next] to continue processing.  
	There are no error codes.
 
	I am using windows 10
 
	Current F/W ver NW2017
 
	Black ink cartridge is empty, but display is at home screen.  Would this stop the update?