RFU Load Error Resend RFU message on HP LaserJet 4240 4250 4350. An RFU file is a Remote Firmware Update file. If you see error messages like this -- 'RFU Load Error' or 'Resend RFU' -- it means there is something wrong with the firmware, and usually refers to the fact that a firmware update was not successful. ![]() I have a shared printer (no print servers at this company) that is generating a error code of 49.4C02. This HP LJ 470DN's error point to it very old firmware and I need to update it to at least the 2009 firmware release. HP's firmware packages allows for the firmware to be downloaded to your PC, and sent to the networked printer to be updated. The problem is that the same 49. Error code is generated every time I do so. HP's support page suggests using the command line copy /b command but either I am getting the syntax wrong, or the printer is not being found. I can browse to the printer and it does work about half the time, so it's not completely down. Has anyone found a way to upload the firmware from say a USB thumbdrive in the machine? Serial number for photofiltre studio x. Have you tried updating firmware via FTP? Usually will go through no problem that way. Here is a walk through. Remote firmware update by using FTP on a direct network connection If the HP Color LaserJet 4700 uses a direct network connection, use file transfer protocol (FTP) to update the firmware. Complete the following steps for your operating system. Windows operating systems Make note of the TCP/IP address on the Embedded Jetdirect page. The HP Embedded Jetdirect page is the second page of the configuration page printout. NOTE: Before connecting to the product, make sure that the product is not in Powersave mode. Also make sure that any error messages are cleared from the control-panel display. Open a command window on your computer. For example, if the TCP/IP address is 192.168.0.90, type ftp 192.168.0.90. Press Enter on the keyboard. When prompted for the user name, press Enter.
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