I followed the instructions here: http://www.3cx.com/sip-phones/cisco-7940g-7960g/ to convert my Cisco 7940G phone to SIp to use with 3CX, but I'm getting a TFTP:file not found error on the phone display. I'm using Pumpkin TFTP server v 2.7 When I power up the phone the display says 'TFTP: P003-08-8-00.loads' and then the tftp window says: ...'P003-08-8-00.loads' of type 'octet' is requested from 10.10.1.3 ...Transfer of 'P003-08-8-00.loads' has successfully completed. and then the phone says: 'TFTP file not found,' and this just repeats. Every time the phone requests the file the tftp server registers successful transfer but the phone behaves as though it never got the file, and it's stuck in this loop. If anyone can help with this I'd be grateful.