If the printer is "locked" by an error, you might need to initiate the update through the OOBE (Out of Box Experience) or Service Mode. Turn the printer off.
is a common tactic for users looking to bypass "Dynamic Security" updates that block non-HP or refilled ink cartridges. While HP officially states that downgrading is not possible or supported, many users find it "better" because it restores the ability to use more affordable third-party supplies. Why Downgrade? hp officejet pro 8620 firmware downgrade better
In this article, we will argue why an than living with the latest updates. We will cover the risks, the step-by-step process, and the undeniable benefits of running older, stable firmware. The Great Unbricking: A Technical and Ethical Examination