Arduino Wifi firmware upgrade problems

Development Tools IDE 1.x
1

Hi All,

I got the following wifi shield connected with UNO R3

But the wifi connection is not persistent. The connection times out periodically. So I started following this guide to upgrade the firmware http://arduino.cc/en/Hacking/WiFiShieldFirmwareUpgrading

Now when I use below command to upload the firmware. I get error "ERROR: no argument found. Type batchisp -h for help"

batchisp.exe -device AT32UC3A1256 -hardware usb -operation erase f memory flash blankcheck loadbuffer /Arduino/hardware/arduino/firmware/wifishield/binary/wifi_dnld.elf program verify start reset 0

Please suggest.

2

The wifi shield I have has AT32UC3A1512-U Atmel chip.
So I tried both AT32UC3A1512 and AT32UC3A1512-U in the batchisp command. But nothing changed