If you tell me you are trying to use (e.g., wiTECH 1.0 or CDA 6), I can provide more specific instructions for that environment. HP Printer Firmware Downgrade Guide: Download Link Included

If you are looking to fix a "bricked" device, enable offline access, or simply regain control of your diagnostic tool, utilizing a proven firmware downgrade service or utility is the only path forward.

: The internal memory chips on low-quality clones sometimes fail to overwrite properly.