FTP - downloading files

I’ve got some problem with dowloading files with size over 50kB. I’m connecting to FTP and I’m starting dowloading file correctly. But at the end of transmissing file I don’t get [ETX] without preceded [DLE]. There is only something like this:
…abcd[cr][lf]OK[cr][lf]

And the file is cutted near the end.

There is my AT commands

at+cpin=1111
OK
at+WIPCFG=1
OK
at+WIPBR=1,6
OK
at+WIPBR=2,6,11,“my.apn.pl”
OK
at+WIPBR=2,6,0,""
OK
at+WIPBR=2,6,1,""
OK
at+WIPBR=4,6,0
OK
at+WIPCREATE=4,1,“83.238.11.111”,21,“tralalala”,“xxxxxxxxxx”
OK
at+WIPOPT=4,1,2,40,1
OK
at+WIPOPT=4,1,2,41,0
OK
at+wipfile=4,1,1,"./pmcn.EXE"
CONNECT
{data}…

Wavecom Fastrack Supreme :
AT+WDOP
Production Date (W/Y): 03/2008

AT+CGMR
663_09gg.FSU002 1955080 080207 16:01