Hp Officejet Pro 8620 Firmware Downgrade New Info

Most users seek a downgrade because their printer suddenly rejects non-HP ink after an update (the "Cartridge Protection" feature).

Instead of downgrading, try disabling this feature (if the menu allows it): hp officejet pro 8620 firmware downgrade new

Note: If this option is grayed out or missing, it means the current firmware has locked this setting. In this case, you would need to buy original HP cartridges or attempt the downgrade above. Most users seek a downgrade because their printer

Once rebooted:

On your printer’s touchscreen:

If it’s FDP32B, FDP32C, or any version above FDP32A, you are a candidate for downgrade. Note: If this option is grayed out or

HP’s firmware from February 2025 implements a hardware fuse. Once blown, you cannot downgrade below version 2.1. Check your current version. If it’s 2.1.7 or higher, the new method above will still work because it exploits the bootloader, not the firmware. But if you see error code 0x61011d3 during downgrade, your printer is permanently locked.