Downgrade tools are typically Windows-based.
Click the or Transfer button to begin sending the firmware data package. Step 4: Monitor the Progress
Example filename: OJPro8620_1829A.exe or .bdl
: Do not power off the printer or disconnect the cable during this process, as it can permanently damage (brick) the device. Alternative: Restore Factory Defaults hp officejet pro 8620 firmware downgrade
: If the downgrade succeeded but the error remains, take out the third-party cartridges, clean the gold chip contacts gently with a lint-free cloth, reinstall them, and restart the printer. If you'd like to proceed safely, let me know:
This indicates the executable utility recognizes that your current firmware is newer and is blocking the rewrite. To bypass this, you may need to look for a third-party firmware flashing tool or put the printer into a manufacturing "Refurbish Mode" using specific button combinations on startup.
You must put the printer into a manufacturing service state. Turn off the printer. Hold the power button down while plugging the power cord back in, tapping the "Back" arrow key (the bottom left touch icon) four times rapidly until a blue "Engineering Menu" or "Support Menu" appears. Navigate to the firmware update sub-menu to force the USB connection open. Printer Dropped Connection Midway Downgrade tools are typically Windows-based
However, you must be technically comfortable with USB connections, command prompts, and disabling network features. If you rely on HP Instant Ink or cloud printing, do downgrade.
Check the box next to your listed (ensure the connection type specifies "USB").
If you’re actually planning to downgrade your 8620, search for on YouTube – there are step-by-step videos from users who’ve succeeded. Just be ready for a battle. Alternative: Restore Factory Defaults : If the downgrade
Open the downloaded older firmware executable file (e.g., as an Administrator on Windows). The HP Firmware Update Utility window will open.
HP frequently updates the firmware on its OfficeJet Pro 8620 printers. These updates often introduce Dynamic Security, a feature that blocks third-party, refilled, or remanufactured ink cartridges. If your printer suddenly stops recognizing your budget-friendly ink and displays a "Cartridge Problem" or "One or more cartridges are missing or damaged" error, rolling back your firmware is the most effective solution.