. While HP officially states that a downgrade is not possible through their standard tools, user communities and third-party ink providers have developed reliable methods to restore older versions. All Ways Graphics Why Users Downgrade (The "Review") Cost Savings:
A window will open listing connected HP printers. Look for your in the list.
To downgrade the firmware on your HP OfficeJet Pro 8620 printer:
Given these challenges, your best strategy is to be proactive. Disable automatic firmware updates immediately, and stay informed about the latest developments regarding HP's Dynamic Security policies. This approach will empower you to make the best decision for your printing needs, keeping your printer functional and your printing costs manageable.
If the downgrade was successful, you may need to clean the cartridge chip contacts or perform a "Factory Reset" via the Support Menu.