HP's OfficeJet Pro 9025e printer is affected. (credit: HP) A firmware update has rendered several models of HP OfficeJet printers useless for weeks. As reported by Bleeping Computer on Saturday, a recent firmware update inadvertently left many users with devices that won't print and will only display a dreaded blue screen. HP's support forums are currently littered with users complaining that their printer is no longer functioning and that its screen has turned blue with the error code "83C0000B " displayed.