If the firmware tool fails or you cannot run the executable, you can push the firmware via the printer's web interface.
There is, however, a critical nuance. HP has also acknowledged that for certain printer models—including the OfficeJet Pro 8620—it has released a entirely. According to HP's documentation, "This update will disable the Dynamic Security feature for all printers, regardless of their production date" for models in the OfficeJet Pro 8600 series. In other words, while HP will not help you downgrade to an arbitrary older version, the company does offer an official path to remove the ink-blocking feature : simply install the latest firmware available on HP's support website.
If you need cheap ink, sell your updated 8620 and buy an older printer (e.g., Brother) that never uses dynamic security.
Congratulations, you have successfully downgraded your HP OfficeJet Pro 8620 using the 2025 method. hp officejet pro 8620 firmware downgrade new
This guide provides a comprehensive walkthrough for downgrading the firmware on your HP OfficeJet Pro 8620 in 2026. Why Downgrade Your HP OfficeJet Pro 8620?
Why Downgrade Your HP OfficeJet Pro 8620 Firmware? HP regularly updates the firmware for the OfficeJet Pro 8620 printer. While these updates sometimes fix bugs, they often enforce "Dynamic Security." This feature blocks the use of third-party, refilled, or non-HP ink cartridges.
HP's official stance on firmware downgrade is clear: . In numerous HP Community threads, HP employees state directly that "downgrading the firmware on the HP OfficeJet Pro 8620 is not possible". One HP support representative wrote: "After reviewing your case, I regret to inform you that downgrading the firmware on the HP OfficeJet Pro 8620 is not possible". If the firmware tool fails or you cannot
During this process, the firmware updates the acceptable chip IDs on the cartridges. If you are using remanufactured, refilled, or compatible ink cartridges (which often utilize older, cloned, or reset microchips), the updated printer firmware will reject them.
A: It is unlikely to be on HP's official website. You will need to search through the support documentation of large third-party ink suppliers or through technical forum archives.
Use a stable or a direct Ethernet cable (disconnect USB during the flash). Bricking Risk According to HP's documentation, "This update will disable
Downgrading reverts your printer's internal operating system to a date before the restrictive security patch was implemented, allowing your machine to communicate seamlessly with third-party chips again. Step 1: Gather Your Tools & Prepare the Printer
The HP Firmware Update utility will open. It should automatically detect your HP OfficeJet Pro 8620. If it does not, click the drop-down menu and manually select it. Initiate the Downgrade: Click the Update button.
I can provide the specific steps or alternative tool recommendations based on your system setup. Share public link
: HP officially discourages downgrading as it removes security patches and may void warranties. Some newer firmware versions (like FDP1CN2022AR) are specifically designed to block downgrading.