Dell bios update exe rom extraction

[mahdi]

How can I extract rom image for inspiron 6400 update.exe
URL:
https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=r158... 
<https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=r158...>

md5: b64578a1b0ab4a925056dee8b12b0fde