does anyone know any TFTP server for Mac OS X? maybe there is one build-in?
It's there, you just have to enable it:
Starting the TFTP server on Mac OS X Leopard (sudo needed) (Note this does not work with Mac OS X Lion):
To test you can tftp to localhost, or you could create a test file. In terminal, type:
TFP Server GUI:
If you're into GUIs, this TFTP server GUI app might work for you: http://ww2.unime.it/flr/tftpserver/
This solution works on Mac OS X Lion.
There already is one:
sudo launchctl load -F /System/Library/LaunchDaemons/tftp.plist sudo launchctl start com.apple.tftpd
And, assuming you don't have a typo in either your subject or problem description:
sudo launchctl load -F /System/Library/LaunchDaemons/ftp.plist sudo launchctl start com.apple.ftpd