Hp Officejet Pro 8620 Firmware Downgrade New !!hot!! May 2026
HP OfficeJet Pro 8620 Firmware Downgrade: The Complete Guide
If you are looking to downgrade the firmware on your HP OfficeJet Pro 8620, you are likely facing one of two common scenarios: your printer is refusing to work with third-party ink cartridges, or a recent update has caused connectivity or scanning issues.
HP intentionally makes downgrading firmware difficult to prevent security loopholes, but it is not impossible. This guide covers the methods, risks, and step-by-step instructions to revert your printer to an older version. hp officejet pro 8620 firmware downgrade new
Step 3: Disable HP’s Online Security Check
In the hidden menu:
- Press the down arrow to highlight “Skip Server Validation.”
- Press OK.
- Set “Allow Downgrade” to ON (default is OFF in new firmware).
- Press Back.
Step 4: Perform the Downgrade via USB
- Turn off your OfficeJet Pro 8620 completely (unplug for 30 seconds).
- Plug in the USB drive to the port on the front (not the rear USB port used for printing).
- While holding the Cancel (X) button and the Wireless button simultaneously, plug the power cord back in.
- Keep holding both buttons until the screen flashes “USB Update Mode” (about 10-15 seconds).
- Release the buttons. The printer will display: “Update found. Update from USB?”
- Tap Yes.
- The downgrade process begins. You’ll see a progress bar. Do not touch the printer.
- After 8-12 minutes, the printer will restart twice. Wait until the home screen appears.
HP OfficeJet Pro 8620: A Practical Guide to Firmware Downgrade