Enter your (e.g., LaserJet M602) rather than the accessory model J8013E. Expand the Firmware section.
Look for the HP Jetdirect section. The firmware version for the J8013E often starts with a prefix like V.38 or higher. hp j8013e firmware
HP typically bundles the J8013E firmware into the printer’s or the main printer firmware file. Go to the HP Software and Driver Downloads page. Enter your (e