How do I change the setting to unlock firmware update feature on hp7720 message about instant ink

[Tutney4]

i want to use remanufactured ink cartridges for hp7720, my firmware is on auto , message says auto update locked.  So I cannot change the automatic firmware update.  How do I change this setting to unlock firmware update feature. My printer is no longer under warranty, I should be able to use whatever compatible ink cartridge that I choose.

[Nal_NR]

Hi @Tutney4,

Welcome to the HP Support Community

I'd like to help!

Are you not able to update the firmware? Or are you looking to downgrade the firmware?

If you are looking to downgrade, Most recent hp printers do not allow firmware downgrade. They have built-in code that checks the version of the download and will not accept any firmware that is earlier than the current version. 

You may refill your cartridges or use remanufactured cartridges, but you may run into problems. HP will not guarantee the functionality of those ink cartridges.

There are many cartridges in the market which is refilled and sometimes the chip is not configured to work with the printer. You need to contact the cartridge manufacturer and find out why it's not working. Try a different cartridge supplier and check if that works.

Hope this helps! Keep me posted. 

And, Welcome to the HP Support Community. 

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