I have a US version WorkForce Pro WF-3720 that does not go into firmware update mode by pressing the power button and the top right corner of the screen. Would the steps you described for the WF-3720DWF work on the US version WF-3720?
The instructions of the WF3720_chipless_manual_en.pdf say to press the power button and the top right corner of the display to put the printer into firmware update mode. However when I do this, it does not work, it goes to the normal home screen. The current version I have is CL22I6. Is there still any way to make this printer chipless? Thank you for your time. WF3720_chipless_manual_en.pdf