To help find the right version or troubleshoot an error code, tell me: What (Windows or Mac) are you using?
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The HP OfficeJet Pro 8620 is a rugged, efficient all-in-one printer. However, automatic firmware updates can sometimes cause unexpected issues. Many users seek a firmware downgrade to restore third-party cartridge compatibility, fix software bugs, or regain control over their printing preferences. To help find the right version or troubleshoot
Downgrading the firmware is a way to revert to an earlier version that does not enforce Dynamic Security as aggressively, restoring full functionality with third-party inks. If you share with third parties, their policies apply
Locate your HP OfficeJet Pro 8620 in the device drop-down list.
Interrupting a firmware installation—whether upgrading or attempting to revert—can cause a permanent failure of the main logic board, rendering the device inoperable (commonly known as "bricking").
Press the buttons in this exact sequence: .