printer cartridge not compatible

[spurwd]

I have been using generic cartridges in my HP4520  but now I am getting a "not compatible" message. I was told HP sent a command without my consent to do this. How can I remove command?

[VikramTheGreat]

Hi @spurwd,

Welcome to HP Support Community.
 

Thank you for posting your query, I will be glad to help you.

If your HP OfficeJet 4520 is suddenly showing a "Not Compatible" message for cartridges that previously worked, it is likely due to a firmware update that enabled HP's Dynamic Security feature.
 

1. Try Resetting the Printer

• Turn OFF your printer.
• Unplug it from the power source and wait for 5 minutes.
• Plug it back in and turn it ON.
• Check if the error persists.

2. Reinsert the Cartridges

• Remove all cartridges from the printer.
• Clean the cartridge contacts with a lint-free cloth.
• Reinsert them one by one and check if the message disappears.

3. Check for a Firmware Downgrade Option

• Go to HP’s firmware download page: HP Software & Drivers
• Search for your printer model: HP OfficeJet 4520.
• If available, download an older firmware version (before the update that blocked third-party cartridges).
• Run the firmware installer and follow the on-screen steps.
• Restart your printer and check if the error is resolved.

4. Disable Automatic Firmware Updates

If you manage to get the cartridges working again, prevent future issues:

• Open HP Printer Assistant on your computer.
• Go to Printer Updates > Manage Updates.
• Select "Do not check for updates" or "Ask before updating". Click Apply.
   

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

VikramTheGreat

HP Support