Step 3: Put the Printer into Manufacture/Service Mode (If Required)
Select your connected from the dropdown device list. Click Update or Transfer .
Right-click the downloaded HP firmware .exe file and select .
Around firmware version (and later), HP aggressively locked down the 8620. Users who had been happily using compatible or remanufactured cartridges for years suddenly saw: hp officejet pro 8620 firmware downgrade
Before attempting to downgrade the firmware, make sure:
On the printer control panel, go to and set it to Manual or Off . Download Older Firmware Visit the HP Support website and enter your model.
This article will explain exactly why you might need to downgrade, the risks involved, and a step-by-step guide to revert your 8620 to a previous, functional firmware version. Step 3: Put the Printer into Manufacture/Service Mode
Newer firmware versions often contain patches for critical security vulnerabilities. Reverting to older software may expose the device to network-based threats.
Download the file to an easily accessible folder on your computer, such as your Desktop. Step 2: Prepare Your Printer
Select or OOBE Reset (Out of Box Experience). Around firmware version (and later), HP aggressively locked
For assistance with specific error codes or connectivity issues, consulting a certified printer technician or the official HP support portal is the most reliable way to ensure the longevity and security of the hardware. Share public link
Once you have successfully downgraded, you must prevent the printer from automatically updating itself again. On the printer's home screen, select the (gear) icon. Select Printer Maintenance . Select Update the Printer . Select Printer Update Options . Select Do Not Check . Select No to automatic updates. Troubleshooting
Are you currently getting a (like 83C00006)? Are you using third-party cartridges ? Officejet Pro 8620 Downgrade firmware blocked by hp ?