If the downgrade succeeds but the error remains, the microchip on your third-party cartridge may be physically damaged or permanently blacklisted. Try installing a fresh third-party cartridge with a newer version chip. Conclusion and Disclaimer
HP does not host old firmware versions on its official support site. You must source the file from reputable third-party printer repair forums, ink suppliers, or tech archives.
Always refer to the manufacturer’s support website for official troubleshooting guides regarding cartridge errors or system bugs.
: 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
Firmware Downgrade for HP OfficeJet Pro 8620: Risks, Methods, and Recovery hp officejet pro 8620 firmware downgrade
To downgrade, you need a specific older firmware version released before HP implemented the strict cartridge locks. For the OfficeJet Pro 8620, look for firmware versions released in (such as version FDP1HA1416AR or older).
Understanding the motivation behind a firmware reversion helps clarify the technical steps required.
A common issue is that users might find a newer firmware file (e.g., OJ8620_1910A.exe ) on the HP website, only to find it's "Not Applicable" to their printer that is already running a different version (e.g., FDP1CN2022AR ). A full factory reset will also not restore an older firmware version; it only resets your settings to their defaults.
Verify that your computer recognizes the printer over USB by checking your "Devices and Printers" menu. Step 2: Download the Older Firmware Version If the downgrade succeeds but the error remains,
I’ve had my HP OfficeJet Pro 8620 for years. It’s a tank – cheap to run with third-party cartridges, duplex scanning, the works. Then HP pushed a (version ending in .2348, I think). Suddenly, my compatible ink cartridges were “unauthorized” and the printer refused to print. Error 0xc19a0023. No warning. No option to roll back.
Open the downloaded older firmware installer on your computer. The HP Firmware Update utility window will open.
Here is a breakdown of the downgrade process and why it is a sought-after solution.
Do not touch the printer, unplug the cable, or turn off your computer during this process. The process takes roughly 3 to 7 minutes. The printer will automatically reboot when finished. Step 5: Disable Automatic Updates Immediately You must source the file from reputable third-party
Downgrading the firmware on an HP OfficeJet Pro 8620 to bypass "cartridge error" messages requires finding an older firmware version (like FDP1CN1910AR or similar) and flashing it via USB, as HP officially discourages downgrades.
Do not attempt a firmware downgrade over Wi-Fi or Ethernet. A temporary network drop can ruin the process. Connect your printer directly to your computer using a USB A-to-B cable.
What is the installed? (Found in Printer Status Report)
With the printer unlocked, you can now push the older software from your computer. Close all running applications on your computer.