Today i purchased 2 7940's to use in a small office. These need to be SIP based and before i bought i read that there was updates available to the firmware to make them SIP based. I have tried for several hours now to get them from the factory firmware 3.1 onto anything SIP based but there seams to be nothing i can do to get them on. The tftp says i am missing cnf files. I am lost.
Anyone shed some light please.