Windows
You can set up TFTP server very quickly using TFTP32 sofware. It is free.
Enable TFTP server. Your settings should look like:
Linux
If you wish, you can use linux machine to do the same task.
sudo apt-get install xinetd tftpd tftp
sudo touch /etc/xinetd.d/tftp
sudo nano /etc/xinetd.d/tftp
Paste this code:
service tftp
{
 protocol = udp
 port = 69
 socket_type = dgram
 wait = yes
 user = nobody
 server = /usr/sbin/in.tftpd
 server_args = /home/tftpboot
 disable = no
}
sudo mkdir /home/tftpboot
sudo chmod -R 777 /home/tftpboot
sudo chown -R nobody /home/tftpboot
sudo service xinetd restart