I'm trying to download file from FTP server using SIM800, but after sending AT+FTPGET=1-> modem returns +FTPGET:1,64.

Details:
Modem: SIM800
SIM card: Vodafone
FTP Server: ftp.drivehq.com

GPRS is working with this SIM card (I have checked it via TCP data send)
FTP server is also working, I have checked it with various FTP clients.

Below is the AT commands sequence:
Code:
AT

OK
AT+CSQ

+CSQ: 28,0

OK
AT+CREG?

+CREG: 0,1

OK
AT+CGATT?

+CGATT: 1

OK
AT+SAPBR=3,1,"CONTYPE","GPRS"

OK
AT+SAPBR=3,1,"APN","www"

OK
AT+SAPBR=1,1

OK
AT+SAPBR=2,1

+SAPBR: 1,1,"***************"

OK
AT+FTPCID=1

OK
AT+FTPSERV="ftp.drivehq.com"

OK
AT+FTPPORT=21

OK
AT+FTPUN="******"

OK
AT+FTPPW="******"

OK
AT+FTPTYPE="I"

OK
AT+FTPMODE=1

OK
AT+FTPGETNAME="test.txt"

OK
AT+FTPGETPATH="/myFiles"

OK
AT+FTPGET=1

OK

+FTPGET:1,64
Anyone can help me out? Am I missing some AT commands?

Thank You!!