-C Version device "plug and play" like firmware

I got some units of the Connect ME -C versions. They all are loaded with the RAM based FTP Server, but I have no firmware for it. I got the units by mistake and I can’t return them.

I’m looking for a “plug and play” like firmware, something similar to the -S units, to be used in a telnet/TCP to Serial mode. I do not want to have to develop a firmware from scratch or have to buy the DK.

Any help will be appreciated, if not I will proceed to sell the units.