Before we dive into the “how,” you need to understand the trade-off.
HP introduced firmware version counters in the bootloader:
Many users report that after a recent automatic firmware update, their HP OfficeJet Pro 8620 starts rejecting non-HP or remanufactured cartridges with the error:
“Cartridge problem – Ink cartridge missing or damaged.”
Downgrading to an older firmware version (pre-2022) can restore compatibility and bypass HP’s Dynamic Security feature.
⚠️ Warning: Downgrading is not officially supported by HP. It may void warranty or cause network/screen issues if done incorrectly.
If you are currently stuck with an 8620 that refuses third-party ink, here are the realistic paths forward: hp officejet pro 8620 firmware downgrade hot
Option A: The "Official" Remediation HP has a landing page for "HP Cartridge Protection" and "Dynamic Security" remediation.
Option B: Disabling "Cartridge Protection" via Settings Sometimes, the issue isn't a firmware version, but a setting toggled on during an update.
firmware downgrade is a high-interest topic primarily because recent firmware updates (like version FDP1CN2022AR
) often include "Dynamic Security" measures that block the use of third-party or non-genuine ink cartridges. Downgrade Guide & Best Practices Before we dive into the “how,” you need
While HP officially discourages downgrading as it can "brick" the printer or remove security patches, users often follow these steps to restore third-party ink compatibility: Preparation:
USB Connection: Connect the printer directly to your PC via a USB cable. Network or Wi-Fi connections are less stable for firmware flashing.
Disable Updates: On the printer control panel, go to Settings > Printer Maintenance > Update Printer and set it to Manual or Off to prevent the printer from immediately re-updating. Locate Firmware: HP does not host older firmware on their official site.
Users typically find older files (like version 1416AR or 1910A) on community repositories or third-party ink vendor sites. Execute Downgrade : Download the older .exe firmware installer. Run the file and select your HP OfficeJet Pro 8620 from the dropdown menu.
If the installer shows a "Not Applicable" or "Up-to-Date" error, some users extract the .exe (using 7-Zip), open the EnterpriseDU.ini file, and change VerifyDownloadID from 1 to 0 to force the flash. Keep holding the buttons until the touchscreen flashes
Confirm Version: Check the printer's Support Menu (accessed by tapping the "Back" button 4 times) to verify the firmware has reverted. Risks and Troubleshooting Update the firmware on an HP printer | HP® Support
The HP OfficeJet Pro 8620 is a capable workhorse, but it became the center of a significant consumer rights storm regarding "Dynamic Security." This feature, introduced via firmware updates, was designed to block ink cartridges that did not contain a genuine HP chip.
To know if you need a downgrade, check your current version:
If you see 20230309 (March 9, 2023) or higher, you are locked out. You need version 20220822 (1742A) or older.