: Users often report that recent updates cause "Non-HP Chip Detected" or "Cartridge Problem" errors that prevent printing entirely. An older firmware version (such as FDP1CN1416AR ) often resolves these lockout issues.
: Downgrading may reset your printer to factory defaults, so note your Wi-Fi and scanning preferences. hp officejet pro 8620 firmware downgrade better
Go to the printer’s control panel, select Setup > Service > Firmware Revision . : Users often report that recent updates cause
The HP OfficeJet Pro 8620 has long been a workhorse for home offices and small businesses. It’s fast, reliable, and produces high-quality prints. However, many users recently found their printers "locked" or refusing to recognize perfectly good ink cartridges. The culprit? An automatic firmware update. Go to the printer’s control panel, select Setup
Pop in any $5 compatible cartridge. The printer accepts it without error. You can now refill the original cartridges using a resetter tool. Your cost per page drops from 10 cents to 2 cents.