According to the site , flash.bat should run automatically
1. Download the file by clicking the "Download" or "Obtain Software" button and
saving the file to a folder on your hard drive (make a note of the folder where
the downloaded file is saved).
2. Double-click the downloaded file and follow the on-screen instructions.
After the files are unpacked, flash.bat runs automatically to update the BIOS.
NOTE: After the files have been unpacked, the file that was downloaded in Step
1 can be deleted, if desired.