Secure boot update by gnome software

Hello everyone!
I have an update warning in the app store, about a firmware secure boot dbx. The thing is, I don’t know how to update… I even used the gnome software update, but the warning remains there…
Could someone guide me?

Try from the command line with fwupdmgr get-updates to find out what may be updated and fwupdmgr update to perform the updates.

The command line should show a lot more info than the gui.

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Thank you very much @computersavvy , it worked perfectly!
The procedure is already written down in my notebook.

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