The program will search for connected printers. Select your .
As of early 2026, many users have reported that the latest firmware versions (such as those released in late 2024 or 2025) have made it difficult to use more affordable compatible cartridges. Downgrading to an older version, like the stable build, can restore your ability to use third-party ink and bypass "non-genuine" cartridge blocks. Step-by-Step Downgrade Process
Then, the notification appeared.
Ensure no print jobs are stuck in the Windows or Mac print queue. Step 3: Put the Printer into Service Mode (If Required)
After successful downgrade, the printer will auto-update within 24 hours if connected to the internet. hp officejet pro 8620 firmware downgrade new
The HP OfficeJet Pro 8620 is a workhorse printer, known for its reliability and efficiency in small office environments. However, HP’s continued enforcement of its Dynamic Security system often blocks cheaper, third-party, or refilled ink cartridges through automatic firmware updates.
"Downgrading may void your HP warranty or Instant Ink subscription. This process is for educational purposes. HP may have patched this method with recent silicon-level updates. If your printer has firmware , downgrade is physically impossible due to OTP fuse burning."
HP OfficeJet Pro 8620 Go to product viewer dialog for this item. Firmware Downgrade: 2026 Guide If your HP OfficeJet Pro 8620
Do you already have a , or are you currently relying entirely on Wi-Fi? The program will search for connected printers
This means the executable file recognizes that your computer has a newer version and is blocking the downgrade. To bypass this, you may need to use a third-party flashing tool (like printhead clean utilities that feature firmware rewriting) or extract the raw .ful firmware file from the installer and send it directly to the printer's network IP address via an FTP command line. Printer Displays "Cartridge Problem" Even After Downgrade If the downgrade was successful but the error remains:
This is the most straightforward and official method for Windows and macOS users.
Performing an allows you to revert your machine to an older, less restrictive software environment (such as the reliable 1910A version) so you can resume printing with affordable third-party cartridges. Why You Need a Firmware Downgrade on the HP 8620
A: Historically, there is less support. However, HP Community threads suggest that Mac users can attempt a downgrade by opening the HP Utility application, selecting the printer, and navigating to the Firmware Update section, provided the older .rfu file is downloaded and compatible. Downgrading to an older version, like the stable
HP routinely pushes automated over-the-air firmware updates under the guise of security improvements. However, the primary outcome for many users is the digital enforcement of original equipment manufacturer (OEM) ink dependencies. Reverting to an older firmware release provides specific operational benefits:
Press and hold the while simultaneously touching the display screen area repeatedly until a hidden menu or "Manufacturing Mode" appears.
: Bypasses the requirement to buy expensive original HP (OEM) ink.