I have an epson TM88II receipt printer that has an Epson NIC installed. I can print to this printer across the network from any PC but it just randomly printing out the message - Invalid TFTP operation - Exiting firmware update. This is a major problem as it is using all the thermal paperand is sometimes stopping the print jobs going through. The network is MS running 2003 Server, 48 Port Netgear switch etc. I have identical sites with identical hardware and this is not happening.
Any help would be greatly appreciated as Epson do not have any idea about this.