Problem in downloding firmware

Hi All,

While downloading firmware using AT+WDWL command.and after sending the .wpb.dwl file using the xmodem option.
I am getting the error as "
** MEMORY ALLOCATION ERROR ***"
Please help me in this regard.
Thanks in adavance.
Regards,
Darshan

please find the log…
AT+WOPEN?
+WOPEN: 1

OK
AT+WOPEN=0
OK
AT+WOPEN=4
ERROR
AT+WOPEN=3
ERROR
AT+WDWL
+WDWL: 0

*** MEMORY ALLOCATION ERROR ***