Reset printer admin password

[plane_co]

Hello

I bought a second hand HP printer, the Smart Tank Plus 555 model.

I am trying to update the firmware and other Advanced Settings, but it is telling me that there is a custom password set for the admin user.

I have asked the person I purchased the printer from, but they cannnot recall the password.

I have checked on line and on HP forum and have tried many variations of the suggested default passwords, but nothing is working.

Is it possible to over-ride and reset the password?

Any help would be gratefully received.

Regards

Paul

[Echo_Lake]

@plane_co

Thank you for posting on the HP Support Community.
 

Don't worry as I'll be glad to help, 

I understand the printer is locked with an administrator password and you would like to reset the printer to defaults.
 

Let's try this:

While holding the power button, press and hold the black copy button and the resume button at the same time until the spinning wheel appears on the display.
 

Hope this helps! Keep me posted for further assistance.
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