Displays "Cartridge Problem" or "Missing or Damaged" errors.
After it restarts, check the Printer Status Report to confirm the version has changed. Alternative Method: USB Drive (Flash Drive) If the .exe file doesn't work: Obtain the .ful firmware file. hp officejet pro 8620 firmware downgrade
HP does not officially host older firmware. You must find a version that predates the security lockout (such as or 1640A ) from reliable third-party archives or community threads. Displays "Cartridge Problem" or "Missing or Damaged" errors
If you successfully downgrade, immediately disable all automatic update features and block internet access to the printer. If you fail, consider this a lesson in planned obsolescence and vote with your wallet on your next printer purchase. HP does not officially host older firmware
: Immediately turning off the "Printer Update" feature in the network settings to prevent the printer from automatically re-installing the problematic firmware. The Ethics of Control
and R1640A are common targets for restoration.
On the printer’s touchscreen: