Hp Officejet Pro 8620 Firmware Downgrade New [360p 2025]

For users of the HP OfficeJet Pro 8620, recent "Dynamic Security" firmware updates can often block the use of affordable, third-party or remanufactured ink cartridges, resulting in "Non-HP Chip Detected" or "Cartridge Problem" errors. Downgrading your firmware to an older version (like 1910A or FDP1CN1416AR) can restore compatibility. Understanding the "Dynamic Security" Issue

Recommendation: Only proceed if the printer is currently unusable due to a recent update. hp officejet pro 8620 firmware downgrade new

HP OfficeJet Pro 8620 Firmware Downgrade (NEW 2024-2025 Guide): Why, How, and Risks

If you own an HP OfficeJet Pro 8620, you know it is a workhorse. This all-in-one printer has been a staple in small offices and home businesses for years due to its low cost per page, high yield cartridges, and reliable duplexing. However, if you are reading this article, you are likely frustrated. You may have seen a recent pop-up on your printer screen: “Firmware Update Available.” Perhaps you clicked “Install,” and suddenly, your third-party or remanufactured cartridges stopped working. Or maybe your scanner is lagging, or the printer is begging for an HP+ subscription. For users of the HP OfficeJet Pro 8620

This naming trick fools the printer’s updated security checks. Insert the USB drive into the printer’s front

Step 4: Flash the Firmware

  1. Insert the USB drive into the printer’s front USB port (not the rear port, which is disabled in recovery mode).
  2. Select “Update from USB – Force Version”.
  3. The screen will show OJ8620_DOWNGRADE.bin found.
  4. Press OK.
  5. A progress bar will crawl from 0% to 100%. Do not touch anything. It will stall at 85% for about 4 minutes – this is normal.
  6. When complete, the printer will reboot three times.

The Major Obstacle: HP's Anti-Downgrade (Secure Boot)

From 2019 onward, HP introduced Cryptographic signature verification in firmware for the 8620. Once you install a firmware version higher than 1739A (approx.), the bootloader is updated. After that:

Final thoughts Downgrading firmware isn’t for everyone — it’s a last-resort tool when a recent update harms your daily experience and other fixes fail. It restored my OfficeJet Pro 8620’s previous snappiness and fixed the AirPrint flakiness, but it also required patience and care. If you go down this path: document every step, keep backups of settings, and be prepared to restore to the latest firmware if you hit unexpected issues.