Connect your printer to your computer via for the most stable connection. Run the downloaded firmware installer (.exe or .dmg).
: Downgrading carries a small risk of "bricking" the printer (making it non-functional) if the process is interrupted. You also lose the latest security patches and bug fixes provided by HP. hp officejet pro 8620 firmware downgrade new
In the US, HP’s Dynamic Security has faced class-action lawsuits. While not illegal per se, the Magnuson-Moss Warranty Act protects your right to use third-party parts. The downgrade is a technical workaround, not a hack. Connect your printer to your computer via for