HP LaserJet 4250 Service Manual - Page 106
Remote firmware update through a local Windows port, Windows 95, or Windows Me
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Remote firmware update through a local Windows port If the printer is connected through a local port (USB or parallel), then you can send the RFU file directly to the printer by using a Copy command from a command prompt or an MS-DOS window. At the command prompt, perform the following steps for your operating system. Windows 95, Windows 98, or Windows Me 1 From a command prompt or in an MS-DOS window, type: Mode lpt1:,,p NOTE If the printer is attached to a parallel port other than LPT1, then substitute the correct LPT port number in the mode command. 2 Press Enter. 3 The response you receive should be similar to these examples: ● LPT1 Not Rerouted ● Resident portion of MODE loaded ● Infinite retry on parallel printer time-out 4 At a command prompt, type: copy /b where is the name of the RFU file (including the path) and is the name of the appropriate printer port (such as LPT1). For example, C:\>copy /b c:\4250fw.rfu lpt1 NOTE If the file name or path includes a space, you must enclose the file name or path in quotation marks. For example, type C:\>copy /b "c:\My Documents\4250fw.rfu" lpt1 5 Press Enter. A message appears on the control panel. See Printer messages during firmware update. At the end of the upgrade process, Ready appears on the printer-control panel. 6 Print a configuration page and verify that the firmware revision number matches the revision of the current upgrade. 7 Type the word "exit" at the command prompt to close the command window. 92 4 Maintenance