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There is a firmware upgrade for this model on HP site: version R1547A from Mar 22, 2016. There wasn't new firmware releases on September 13, it's the date hard

by qilo 10y ago

There is a firmware upgrade for this model on HP site: version R1547A from Mar 22, 2016. There wasn't new firmware releases on September 13, it's the date hardcoded into previously released firmwares as the date when to activate this "feature".