So I have a IP office 500 V1 sitting at release 9.0.2 build 840. I just installed 6 - 9508 telephones and none of them are getting the firmware upgrade. When I look at the monitor, it says that I have a reason=2, error=4 on the line for the 9508R15.bin upgrade. I have the TFTP field set to LAN1 value, and the phone file type server set to memory card. Does anyone have any ideas? Thanks in advance.