Hp Officejet Pro 8620 Firmware Downgrade New Jun 2026

This does not always roll back the firmware version but can clear blocks that prevent third-party ink from working. ⚠️ Important Risks

Have you successfully downgraded your 8620 recently? Did you use the "rename" method or swap the mainboard? Let me know in the comments below—because right now, the community is the only support line HP has left. hp officejet pro 8620 firmware downgrade new

Verify and restore

In the hidden menu:

Some newer firmware versions block standard downgrades. You may need to put the printer into a special state: Turn the printer off. This does not always roll back the firmware

Disclaimer: Downgrading firmware voids your warranty and carries a risk of bricking your device. This post is for educational purposes regarding legacy hardware. hp officejet pro 8620 firmware downgrade new