This document explains what a firmware downgrade is, why someone might attempt it for an HP OfficeJet Pro 8620, the risks involved, and step-by-step procedures for attempting a downgrade and recovering if something goes wrong. It assumes the reader is comfortable with basic networking and technical troubleshooting. Downgrading printer firmware can void warranties and may brick the device; proceed at your own risk.
The HP OfficeJet Pro 8620 is a reliable all-in-one printer often used in small offices and home workspaces. However, like many modern HP printers, firmware updates (especially those released after 2016) have introduced – a feature that can reject third-party or remanufactured ink cartridges. For users who rely on affordable non-HP cartridges, a forced firmware update can suddenly render their printer unusable with those supplies. hp officejet pro 8620 firmware downgrade
After it restarts, check the Printer Status Report to confirm the version has changed. Alternative Method: USB Drive (Flash Drive) If the .exe file doesn't work: Obtain the .ful firmware file. This document explains what a firmware downgrade is,
Disable automatic updates in the printer’s web interface immediately after downgrading, and block *.hp.com on your router for that printer’s MAC address. The HP OfficeJet Pro 8620 is a reliable