Bios Issues T420

I have been attempting to update my bios to the latest version but when i launch the program for updating bios in windows the laptop crashes. After a few failed attempts I tried to burn a cd with the iso image but i get this error message. What is the best way to go about this?

I have been attempting to update my bios to the latest version but when i launch the program for updating bios in windows the laptop crashes. After a few failed attempts I tried to burn a cd with the iso image but i get this error message. What is the best way to go about this?