Hp Officejet Pro 8620 Firmware Downgrade New Jun 2026

Step-by-step downgrade (USB method — safest)

After downgrading, HP will try to your printer automatically. Here’s how to stop that permanently:

Since the web interface disables downgrades, this is the current working trick.

If possible, export your network or printer settings.

To prevent the printer from automatically re-installing the problematic firmware:

Before we dive into the downgrade process, let’s understand the battlefield.

Search reputable third-party printer repair forums or ink supplier archives for the HP OfficeJet Pro 8620 firmware downgrading executable ( .exe for Windows or .dmg for Mac).

The HP Officejet Pro 8620 is a powerhouse printer, but many users have found themselves locked out of using affordable third-party ink cartridges due to "Dynamic Security" features included in recent firmware updates. If your printer suddenly rejects non-HP cartridges with a "Supply Problem" or "Cartridge Error," a firmware downgrade is often the only solution.

Uninstall "HP Smart" and "HP Update" from your computer, as these apps often push new, restrictive firmware.