You need a firmware version released prior to the 2016/2017 "Time Bomb" updates. Look for version or similar. Since HP removes these from their official site, you may need to source them from reputable third-party printer technician forums or ink suppliers. 2. Enter Service Mode
If you value functionality over forced compliance, downgrade your HP OfficeJet Pro 8620 today. Take back control of your printing costs, your scanning workflow, and your hardware. hp officejet pro 8620 firmware downgrade better
But recently, you may have noticed a change. Your printer doesn’t act the way it used to. Maybe it rejects third-party cartridges that worked yesterday. Maybe the touch screen is sluggish, or it refuses to scan to a network folder. You search online and find a controversial solution: You need a firmware version released prior to
The only losers in a downgrade are HP’s bottom line and the security purist who worries about hypothetical exploits on a printer that prints invoices. But recently, you may have noticed a change
: Newer firmware updates often include "dynamic security" features designed to block cartridges that do not have an original HP security chip. Downgrading can re-enable the use of these cost-effective alternatives.
Instead of a risky firmware downgrade—which can "brick" the device—you can often achieve better results by adjusting current settings: Update the firmware on an HP printer | HP® Support