Problem connection in GSM-IP with WIP-Soft v321

Hello,
Since the Update modem Q2406B with the software give my distributor, the connection GSM-IP with the WIP-Soft is impossible.

ATI3
657g00gg.Q2406B 1972992 102208 17:08
OK

AT+WIPCFG=3
WIP Soft v321 on Open AT OS v316
Nov 19 2008 14:33:42 WIPlib:v3a08 WIPSoft:v3a09
OK

The connection with AT command is:
AT+WOPEN?
+WOPEN: 1
OK

AT+WIPCFG=1
OK

AT+WIPBR=1,5
OK

AT+WIPBR=2,5,2,“086000xxxx”
OK

AT+WIPBR=2,5,0,“user name”
OK

AT+WIPBR=2,5,1,“psw”
OK

AT+WIPBR=4,5,0
… NEVER OK, no error message, but the led of the modem flash speed as a connection GSM-DATA.
at the time, for to stop the modem, i tape “+++” and ATH. Here the result:

AT+WIPBR=4,5,0
+++
CONNECT 9600
OK

ATH
OK

thank you for your assistance
Jean-François