: On the printer control panel, navigate to Settings > Printer Maintenance > Update Printer > Manage Updates . Set Allow Downgrade to Yes .
HP has declared the 8620 "end of life" (EOL). This means no new features, but they are still aggressively pushing security updates to kill third-party ink. The firmware downgrade "hot" topic will eventually cool down because HP will stop signing old firmware entirely.
Do not touch the printer, unplug the cable, or turn off your computer during this process. The process takes roughly 3 to 7 minutes. Step 4: Verification and Reboot hp officejet pro 8620 firmware downgrade hot
Once completed, the printer will automatically reboot and initialize.
(Wi-Fi may interrupt the process).
Before we dive into the "how-to," it's critical to understand HP's official position. HP . According to their support agents, once a printer is updated to a newer firmware version, it is designed to prevent the installation of older firmware packages, even if they are legitimate HP files.
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Even if a downgrade is blocked, you can sometimes force a or an unsigned older version via emergency recovery:
(as Administrator):
If a firmware downgrade is too complex or if you cannot find a stable older firmware version, consider these alternative methods: 1. Hard Reset the Printer
Do not attempt a firmware downgrade over Wi-Fi or Ethernet. Connect the printer directly to a Windows computer using a high-quality USB A-to-B printer cable. This means no new features, but they are