I downloaded from HP's site the latest firmware update. I ran and installed it.
Installer shows me that's OK (smiley emoji). But when I printed the configuration page I saw that the firmware stayed the same. In C:\ I found the HPFWUpdate.log which has many errors. I have no problem as as I read the only change this version has is a change of network security, but neither the printer nor my computer is on a network. I'm mentioning it in case HP can solve it.
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