If you can source the older firmware version (such as version FDP1CN1416AR ), you can manually push it to the device. HP Support Community Source the File:
When HP releases a new firmware version (e.g., from 1738A to 1743A or 1759A), it often: hp officejet pro 8620 firmware downgrade
Downgrading the firmware on an HP OfficeJet Pro 8620 Go to product viewer dialog for this item. If you can source the older firmware version