You have a stash of 3rd party cartridges and don't care about security patches. No, if: You use HP Instant Ink or genuine HP cartridges.
Most experts agree: Downgrading your own hardware’s firmware for compatibility with safe, refilled cartridges is legal and reasonable under “right to repair” principles in the EU, UK, and several US states. hp officejet pro 8620 firmware downgrade new
These are your only option if current firmware is ≥1743A. You have a stash of 3rd party cartridges
For those who succeed, you’ll enjoy the printer you originally paid for – fast, cheap to run, and free from HP’s constant nagging. cheap to run
firmware is a common method for bypassing "Dynamic Security" or "Non-HP Chip Detected" errors that block third-party ink cartridges. Quick Summary