I recently began receiving various errors related toprint head and ink issues. I am using refilled HP ink cartridges, and in the past they have worked A-OK. Now they don't and I'm assuming it may be related to a firmware upgrade. I have tried reverting to a previous firmware version, but have not been successful. Any advice is appreciated. The printer is a HP OfficeJet Pro 8600 premium, and I am running Windows 10 Professional.
Thanks.
Thanks.
