1. To enumerate: nmap -n -Pn -sU -p69 -sV --script tftp-enum <IP>
2. Cannot list folder, so need to use things like get windows\system32\license.rtf (or similar)
3. If want to upload, use binary, then put xx.exe
4. If transferring text file can use the default mode. If not need to use mode binary to download exe files. (default is mode ascii)

TFTPY

The actual TFTP sucks.. Use this better..

1. (DONE) In case not installed, go python2 folder, pipenv shell, then python -m pip install tftpy.
2. Go python2 script folder, pipenv shell. Then execute python.
3. Next (change IP, path, port accordingly): import tftpy
client = tftpy.TftpClient('10.11.1.111', 69)
client.download('\Program Files\Microsoft SQL Server\MSSQL14.SQLEXPRESS\MSSQL\Backup\master.mdf', 'master.mdf')
4. Can upload as well in a similar manner: client.upload(input=srcfilepath, filename=destfilepath)