I was trying out this module and managed to get it to connect to my ftp server
Commands are as follows:
AT+CWMODE=3
AT+CWJAP=[WIFI SSID],[WIFI PASSWORD]
AT+CIPMUX=0
AT+CIPSTART="TCP","[FTP ADDRESS]",21
# at this point you will get the ftp server's welcome message in the terminal
AT+CIPMUX=0
AT+CIPSEND=[length in chars of the data]
# then you should see a > character
# and you enter the data to send
Sadly I ran into a roadblock at that point getting a syntax error no matter what data i send.
If you have any luck, maybe you could share your findings back here as I have
This should be possible via AT cmds.