A successful downgrade means nothing if the printer immediately downloads the latest update again. You must permanently disable automatic updates using the printer's control panel.
However, the process is risky, unsupported, and not guaranteed to succeed. If your printer is already unreliable due to a bad update, the risk might be worth the reward. But if it's still working, your best bet is to disable automatic updates to prevent future problems. hp officejet pro 8620 firmware downgrade better
Original HP 950 and 951 ink cartridges are expensive. Third-party alternatives offer the same page yields for a fraction of the price. Downgrading your firmware permanently unlocks the printer, allowing you to use any compatible or remanufactured cartridge brand without error messages. 2. Elimination of Fake Error Messages A successful downgrade means nothing if the printer
A sample of 50 HP OfficeJet Pro 8620 users who downgraded to version 1638A reported: If your printer is already unreliable due to