FTP upload two files using WIP

I need send two files over FTP with WIP interface


AT+WIPCREATE=4,1,“192.168.17.7”,“login”,“psswd”
OK
CONNECT
Pause 500msec
Sending file
[ETX]
OK
Pause 1000msec
AT+WIPCLOSE=4,1
OK
+WIPPEERCLOSE: 4,1
Pause 12000msec
AT+WIPCREATE=4,1,“192.168.17.6”,“login”,“psswd”
+CME ERROR: 841
Pause 8000msec
AT+WIPCREATE=4,1,“192.168.17.6”,“login”,“psswd”
+CME ERROR: 841
and modem restarted
+WIND: 3
+WIND: 13
+WIND: 12,0
+WIND: 12,1

where id problem to send second file?

What is the version used because I had the same problem?

Version WaveCOM Q2686 Wip Soft v301 on Open AT OS v421

WIPCREATE with previous command
AT+WIPOPT=4,1,2,40,1
always return
+CME ERROR: 841

Ok

Now I use wip soft v311 on Open AT OS v315 and the problem is removed. I received this version today !The modem is a Q24Plus

I had this kind of problem with ftp after asking a binary transmission (eg: WIPOPT=4,1,2,40,1) , it was impossible to create a new FTP connection after a wipclose -> CME ERROR 841

““WIPCREATE with previous command
AT+WIPOPT=4,1,2,40,1
always return
+CME ERROR: 841
…””
contact wavecom because they told me that I was the only one to have this problem. Tell them who you are because I do not want they think that this is still me!
I asked today to my provider to see the problem with its own hardware and with its own sim card

I had the problem on the first soft: 65700gg, I upgraded it to 657f00g and I still had the problem (perhaps a bad updgrade ? I 'm waiting for an explaination)
But with the last soft, the bug seems to be removed