After downgrading, HP will immediately try to update again. Stop it:
Some users prefer the settings and interface of older versions.
Before you try flashing older files, you must explicitly give the printer permission to accept them.
: Non-OEM (Original Equipment Manufacturer) ink cartridges from reputable third-party sellers usually cost 50% to 70% less than genuine HP 950XL and 951XL ink tanks. hp officejet pro 8620 firmware downgrade better
Open the downloaded older firmware executable file on your computer.
Downgrading is not without risk. Read these warnings carefully.
Officially, HP Support states that downgrading is not possible. HP employees have confirmed in support threads that reverting to an older firmware version is not supported. However, the technical community has found a way. This process is and carries significant risk. After downgrading, HP will immediately try to update again
If you use third-party, refilled, or remanufactured ink, a recent update will likely trigger an error message stating that the cartridges are damaged or missing.
You will need to download the HP Web Jetadmin software. This is a powerful administrative tool that can push firmware to printers on a network.
The HP Officejet Pro 8620 Firmware Downgrade: Taking Back Your Printer Read these warnings carefully
If you choose to proceed, the following steps are commonly used by the community:
You will need to source an older firmware version (usually versions preceding 2016 or specific non-security versions like FDP1CN1416AR or similar).
Turn off automatic updates and disable HP Web Services entirely if you do not use ePrint. Risks and Troubleshooting
Why Downgrading the Firmware on Your HP OfficeJet Pro 8620 Go to product viewer dialog for this item. is Often Better HP OfficeJet Pro 8620