Before downgrading, prevent the printer from immediately re-updating itself. On the printer control panel, swipe down the dashboard. Go to > Printer Maintenance . Select Update the Printer > Printer Update Options . Select Do Not Check . 2. Enter "Refurbish" or "MFG" Mode
Navigate to and ensure "Firmware Update" is enabled. hp officejet pro 8620 firmware downgrade new
HP regularly pushes firmware updates to "improve performance," but these updates often include code designed to recognize and block non-HP chips. By downgrading to an older version (typically versions from 2014 or 2015), you bypass these restrictions. Select Update the Printer > Printer Update Options
Some newer firmware versions block standard downgrades. You may need to put the printer into a special state: Turn the printer off. Enter "Refurbish" or "MFG" Mode Navigate to and
While holding the button, press the Back (curved arrow) button 4 times. The printer should boot into a "Support Menu."
Take back control over what supplies you put in your hardware. Prerequisites Before You Begin