Bought bypass chips
The HP locked down printers were never really that effective. WHen the system said the original toners were empty, a quick shake proved they still had toner in them. I bought bypass chips that I replaced on the toners, and continued using them. Proved what a rip off even genuine HP supplies were with a genuine HP printer. I trust nothing that comes out of HP's official mouth, and even less on what their printers said. Net result... when the toners finally gave out, I bought a different printer. (actually I had a faulty one and repaired it... but even that's cutting a long story short.)