Remove the Ethernet cable or disconnect the printer from your Wi-Fi network.
HP employs a security system called . It’s designed to ensure only cartridges with new HP chips work. Every few months, HP releases a new firmware update that “improves security” – a euphemism for breaking compatibility with non-HP cartridges.
On your printer's touchscreen, swipe down and tap the (gear) icon. Scroll down and select Printer Maintenance . Select Update the Printer . hp officejet pro 8620 firmware downgrade new
This article explores the new methods for downgrading the firmware on your HP OfficeJet Pro 8620 as of 2026, helping you take back control of your printer. Why You Should Consider a Firmware Downgrade
. This comprehensive guide explains why recent updates lock out third-party ink cartridges and provides step-by-step methods to restore your hardware's compatibility with non-HP supplies. Why Perform an HP OfficeJet Pro 8620 Firmware Downgrade? Remove the Ethernet cable or disconnect the printer
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 no longer hosts old firmware. Search archives using exact filenames: Every few months, HP releases a new firmware
From 2019 onward, HP introduced in firmware for the 8620. Once you install a firmware version higher than 1739A (approx.), the bootloader is updated. After that:
Step-by-Step Guide: HP OfficeJet Pro 8620 Firmware Downgrade Step 1: Preparation
These are your only option if current firmware is ≥1743A.
Connect your HP OfficeJet Pro 8620 to your Windows PC via a .