Hp Officejet Pro 8620 | Firmware Downgrade Better |link|

Press the "Back" arrow button four times (even if it's not lit) to enter the Support Menu. 3. Run the Firmware Updater Connect the printer to your PC via USB.

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.

Search for: “HP OfficeJet Pro 8620 firmware FDP_1629A.bin” or check reputable forums like or OctoInk . Do not download from random file hosts—stick to community-verified mirrors.

Why Downgrading Your HP OfficeJet Pro 8620 Firmware Might Be a Smarter Move