Scroll down, under “Optimize your system with drivers and updates” and click “Find it Myself”.
Make sue correct Windows Operating System is listed next to View all available updates.
Want to free download driver for BIOS Toshiba satellite or Acer Aspire one?
Your BIOS is out-of-date and computer performs badly? Why You Need to Update BIOS for Your Laptop, Desktop or Notebook? How to Quickly and Free Update BIOS for Windows 10/8.1/8/7/XP --- Only 5 Steps Part 4. Before learning how to download or update BIOS, you should have the very clean information about it, so that you won't get into trouble.
As always, Dell's documentation isn't very helpful.