Only proceed if you accept the risks. These are high-level steps — follow a trusted, model-specific guide from a reputable source; exact filenames and steps vary:
Disclaimer: Follow these steps at your own risk. Improper firmware flashing can "brick" (permanently disable) the printer.
Step 1: Note your Current Version Print a Printer Status Report from the printer's control panel (Setup > Reports). Look for the "Firmware Version." Ensure you are downloading a version older than what is currently installed.
Step 2: Prepare the Printer
Step 3: Run the Downgrade Utility
The HP OfficeJet Pro 8620 is a workhorse, but HP’s "Dynamic Security" firmware updates often block perfectly good third-party ink cartridges. If your printer recently stopped recognizing your non-HP ink, downgrading the firmware is usually the only way to regain control.
Here is a comprehensive guide on why downgrading is better and how to do it safely. Why Downgrade Your HP 8620 Firmware?
HP frequently pushes updates that serve one primary purpose: ensuring you only buy original HP supplies. By reverting to an older version, you unlock several benefits.
Third-Party Ink Support: Use affordable remanufactured or compatible cartridges without the "Cartridge Problem" error.
Cost Savings: Non-HP ink can be up to 70% cheaper than OEM options. hp officejet pro 8620 firmware downgrade better
Reduced Errors: Newer firmware often includes aggressive "Supply Problem" triggers that can disable the printer even with genuine ink. Full Control: You decide when to update, not HP. Preparation Before You Start
Downgrading firmware carries a small risk. Follow these steps to ensure a smooth transition:
Check Current Version: Go to the printer’s control panel, select Setup > Service > Firmware Revision.
Disable Auto-Updates: Before downgrading, navigate to Settings > Printer Maintenance > Update Printer and turn off "Auto-Update."
Use a USB Connection: Firmware transfers are much more stable via a USB cable than over Wi-Fi. Step-by-Step Downgrade Process 1. Source the Correct Firmware
You need a firmware version released prior to the 2016/2017 "Time Bomb" updates. Look for version PNP1CN1545AR or similar. Since HP removes these from their official site, you may need to source them from reputable third-party printer technician forums or ink suppliers. 2. Enter Service Mode
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.
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.
Run the .exe (Windows) or .dmg (Mac) firmware file you downloaded. Select your HP 8620 from the list of devices. Only proceed if you accept the risks
Click Update and wait. Do not turn off the printer during this process. 💡 Pro Tip: Disable "Cartridge Protection"
Even with older firmware, HP has a feature called "Cartridge Protection" that locks ink chips to one specific printer. To prevent future headaches, go to the printer’s web interface (type its IP address into a browser), navigate to the Settings tab, and disable HP Cartridge Protection. Troubleshooting Common Issues
Printer Not Found: Ensure you are using a high-quality USB cable and that no other print jobs are in the queue.
Update Failed: If the update stalls, restart both the computer and the printer, then try a different USB port.
Still Not Recognizing Ink: After downgrading, you may need to perform a "Hard Reset" by pulling the power cord for 60 seconds while the printer is on.
For the HP OfficeJet Pro 8620, "firmware downgrade" is usually pursued as a cost-saving feature to bypass Dynamic Security measures that block third-party ink. Key Feature: Restoring Third-Party Ink Compatibility
The main "feature" unlocked by a downgrade is the ability to use non-HP cartridges with third-party chips.
Bypassing Dynamic Security: Newer firmware includes code designed to recognize and block cartridges that do not have original HP electronic circuitry.
Fixing Error Messages: A downgrade can resolve "Non-HP Chip Detected" or "Cartridge Problem" errors that prevent printing even if the cartridge is full. Disclaimer: Follow these steps at your own risk
Enabling Ink Level Tracking: Reverting to an older version sometimes restores the printer's ability to display ink levels for compatible cartridges. Important "Better" Alternatives
Instead of a risky firmware downgrade—which can "brick" the device—you can often achieve better results by adjusting current settings: Update the firmware on an HP printer | HP® Support
For users of the HP OfficeJet Pro 8620 , downgrading firmware—or specifically reverting to a version without restrictive "Dynamic Security"—is often considered better because it restores consumer choice, reduces printing costs, and fixes artificial "lockout" errors. While manufacturers argue these updates protect "intellectual property" and "security," many users find that recent firmware versions essentially "brick" their ability to use affordable third-party cartridges that previously worked perfectly. The Case for Reverting HP OfficeJet Pro 8620 how to remove update software for HP 8600 8610 8620 3 Jun 2024 —
For many owners of the HP OfficeJet Pro 8620 downgrading firmware is a strategic move to restore functionality for third-party ink cartridges that have been blocked by HP's Dynamic Security
. While HP officially states that downgrading is not possible or recommended due to security risks, many users find it necessary to bypass "Non-HP Chip Detected" or "Cartridge Problem" errors. Why Downgrading is Often "Better" Bypass Cartridge Lockouts
: Recent firmware versions actively block non-HP cartridges. Reverting to an older version allows the printer to recognize and use affordable, third-party, or remanufactured ink again. Cost Savings
: Using generic ink can significantly reduce printing costs compared to expensive OEM HP 950/951 cartridges. Reliability for Legacy Supplies
: If you have a stock of older generic cartridges, they may only work with the firmware version they were originally designed for. Risks to Consider
Future Updates: