To downgrade the firmware on your HP Officejet Pro 8620 , you generally need to manually install an older firmware file (such as version FDP1CN1416AR
FDP32A is the sweet spot – it allows third-party ink but still fixes early bugs. Going older (e.g., FDP31) risks losing scan-to-email features. hp officejet pro 8620 firmware downgrade new
LVP1CN1749AR).Final thoughts Downgrading firmware isn’t for everyone — it’s a last-resort tool when a recent update harms your daily experience and other fixes fail. It restored my OfficeJet Pro 8620’s previous snappiness and fixed the AirPrint flakiness, but it also required patience and care. If you go down this path: document every step, keep backups of settings, and be prepared to restore to the latest firmware if you hit unexpected issues. To downgrade the firmware on your HP Officejet
You wake up one morning, send a print job to your trusty HP OfficeJet Pro 8620, and suddenly nothing happens. Or worse—a message flashes on the screen: “Cartridge problem. One or more cartridges appear to be damaged. Replace with new cartridges.” Press Setup (gear icon) → Tools → Printer
hp_8620_recoveryAlternatives to downgrading
If the downgrade fails mid-process, the printer can become a permanent brick (no display, no USB detection). The only fix would be replacing the main logic board (~$80 on eBay).