Like at Windows Vista, Windows 7 and Windows 8 don’t enable Telnet and TFTP Clients in installation.
To enable them, open Control Panel > Programs and Features > click Turn Windows features On or Off in left side > enable Client Telnet and Client TFTP then click in OK.
TFTP syntax:
tftp -i [dest IP] PUT [file name]
tftp -i [source IP] GET [file name]