: Double-click the downloaded firmware file on your computer.
To successfully downgrade, you must first prepare the printer to accept an older version of software. 1. Enable Downgrading on the Printer
Only proceed if the printer is currently unusable due to a recent update.
However, for users who have already been affected by a blocking update, HP's official solution is to revert to genuine cartridges. If you rely on third-party ink, downgrading remains one of the only effective workarounds. Be aware that using unofficial methods voids your warranty, and there is always a risk of permanently damaging the printer (commonly called "bricking"). hp officejet pro 8620 firmware downgrade new
On your printer’s touchscreen:
Press and hold the while simultaneously tapping the Home button, Back button, and Home button in sequence.
The HP OfficeJet Pro 8620 is specifically listed in HP's documentation as a model affected by Dynamic Security, alongside models like the 8610, 8630, 8640, and 8660. Once a firmware update containing Dynamic Security is installed, previously working third-party cartridges can be rejected. One frustrated user on the HP Community described that after updating to firmware FDP1CN2022AR, the printer rejected official HP 950/951 cartridges as well, showing errors with black and magenta cartridges when all four were installed. : Double-click the downloaded firmware file on your computer
Wait for the printer to restart; the screen may change colors during this time. 3. Disable Future Automatic Updates (Crucial)
The newest firmware updates (usually versions ending in 2145A or newer) have tightened the screws. They’ve updated the DRM database to block chips that used to work perfectly six months ago.
Before starting, ensure your environment is set up correctly to prevent "bricking" or corrupting your printer's logic board. Enable Downgrading on the Printer Only proceed if
Allows the use of affordable, compatible cartridges LD Products . Freedom of Choice: Enables refilling cartridges.
: Ensure your computer and printer are connected to a stable power source. Step-by-Step Guide to Downgrade HP 8620 Firmware
, ensure:
I can provide the specific steps or alternative tool recommendations based on your system setup. Share public link