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Before proceeding, weigh the advantages against the potential drawbacks of altering your printer's software. The Benefits
If you have issues with your printer's connection or performance, you can also explore how to reset your network settings .
In some instances, firmware updates caused "Cartridge Locked" errors where the printer permanently refused to recognize cartridges that were installed before the update. Downgrading became a troubleshooting step for technicians attempting to unlock the hardware from this software-level bricking. hp officejet pro 8620 firmware downgrade
Before you begin, prepare your setup to ensure the process goes smoothly.
If your printer is frozen with a blank screen or blinking lights after a failed update: Turn it back on and complete the initial setup
The printer will wipe its current configurations and power down. Turn it back on and complete the initial setup. Crucial Next Step: Disable Automatic Updates
How to Downgrade HP OfficeJet Pro 8620 Firmware: A Step-by-Step Guide Why Downgrade? HP Support Community
In 2016, HP released a firmware update for the OfficeJet 86xx series that specifically targeted and disabled many third-party cartridges. More recently, in early 2026, another update reportedly started affecting models including the OfficeJet Pro 7720—showing that HP continues to use this approach.
format, typically sourced from third-party archives or community forums as HP does not host older versions. Step-by-Step Downgrade Process Update the firmware on an HP printer - HP Support
⚠️ : The following guide is based on older, community-sourced information (circa 2016) for the HP OfficeJet 86xx series. Its success on newer firmware versions or different OS setups is not guaranteed . Due to the high risk of failure, it's highly recommended that you thoroughly research current forum discussions (e.g., HP Support Community, r/printers on Reddit) before attempting anything.