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.
Menu navigation becomes snappy. Double-sided printing no longer stalls for 10 seconds between sides. hp officejet pro 8620 firmware downgrade better
Is an HP OfficeJet Pro 8620 firmware downgrade better for you? If you are a high-volume printer who relies on third-party ink to keep costs down, the answer is likely a resounding . By rolling back the clock on your software, you bypass the "Dynamic Security" hurdles and return the printer to its original, more flexible state. If the printer is "locked" by an error,