After updating the firmware several times on my 3 month old WF-4730 printer it seemed to do some things worse. The last firmware update would not recognize the same ink cartridges it worked great with before the update.
I researched and found as of now you are unable to reverse the firmware update and this is the way they decided to force you to by their expensive ink only. This is predatory business practice and should be illegal. Supreme court did rule last year in favor of the consumer. The other issue this unit has is stopping during printing for no reason between the second copy of a 2 page invoice for 35+ seconds.
Called customer support and was confirmed that you can not go back on firmware versions.
Customer support ? They lost me.
Reason of review: Poor customer service.
Monetary Loss: $200.
Preferred solution: Let the company propose a solution.
I liked: Printer, Product before they changed it.
I didn't like: Printer worked with refill ink until update.