Print a Network Configuration Page from your printer to find its local IP address.
If you decide to proceed, remember these golden rules:
Another user shared that they had “unintentionally gotten the latest firmware update” on their 8620 and had been using non‑original cartridges. Since the update, the printer displayed cartridge problems, and after extensive reading, they concluded that the issue stemmed from the new firmware.
Manufacturers generally do not support the installation of older firmware versions. Modifying the device software in this manner can lead to a loss of official technical support and may affect warranty coverage. Best Practices for Printer Maintenance hp officejet pro 8620 firmware downgrade
| Error Message | Cause | Solution | | :--- | :--- | :--- | | "Firmware downgrade not allowed" | HP locked the bootloader in newer versions | Force Recovery Mode (Step 3 above) or try an older intermediate firmware first (e.g., FDP1CN2083AR) | | "CRC Check Failed" | Corrupted firmware file | Re-download the file from a different source | | "Communication Timeout" | USB cable issue or printer sleep mode | Disable sleep mode. Use a shorter USB cable. Restart both devices | | Printer is stuck at 0% | Power-saving feature interrupted | Hard reset: unplug printer for 60 seconds, restart PC, try again |
If the printer refuses to boot past the HP logo screen, turn it off, unplug the power cord for 60 seconds, hold down the power button while plugging it back in, and attempt the USB transfer again.
If software utilities fail, a partial or semi-full reset via the printer's physical touchscreen can sometimes force the hardware to revert to its base factory firmware. Turn the printer on. Print a Network Configuration Page from your printer
Find an older firmware file (e.g., OJP8620_1910A.exe or OJP8620_1834A.exe ). These are often found on third-party ink seller sites (like CompAndSave ) or specialized forums (like r/printers ) rather than the official HP site.
Do not proceed without understanding these risks. An HP OfficeJet Pro 8620 firmware downgrade is not officially supported by HP.
This document explains what a firmware downgrade is, why someone might attempt it for an HP OfficeJet Pro 8620, the risks involved, and step-by-step procedures for attempting a downgrade and recovering if something goes wrong. It assumes the reader is comfortable with basic networking and technical troubleshooting. Downgrading printer firmware can void warranties and may brick the device; proceed at your own risk. Manufacturers generally do not support the installation of
Type that IP address into any computer browser connected to the same network. Click on the or Settings tab. Expand the Web Services Setup menu. Select Product Updates and turn off automatic checks. Troubleshooting Common Errors "The update utility cannot find your printer"
Print a network configuration page from your printer to find its IP address (if reconnected to your network).