Two days ago I started a firmware upgrade (with a 3rd party black ink cartridge installed) on my WF-4734. The upgrade halted in a вЂњMaintenance ErrorвЂќ mode with a message that it вЂњCannot recognize ink cartridge. Try installing again.вЂќ No matter what I do, I canвЂ™t get out of that error mode. After I found your web site, I downloaded your WF4730_FWF475TL_CM13I2.zip file, unzipped it and tried following your directions. I was not able to enter the вЂ?special Firmware Update ModeвЂ™. Every time my printer powered up, it came up in the вЂњMaintenance ErrorвЂќ mode. I tried running your EPFWUPD program and it recognized my printer but wouldnвЂ™t let me reload the previous firmware version, instead it said my printer's Status was "Downgraded (It cannot be Updated)". I have since bought and installed a genuine Epson cartridge. I'm out of Maintenance Mode but I still can't get my printer to go into вЂ?special Firmware Update ModeвЂ™. Does the downgraded status mean my machine can't use your product to go Chipless?