How do I update Dell XPS BIOS and drivers?

[Windows Central]

Update the BIOS and drivers to keep Dell XPS laptop running in top form.
Your Dell XPS 13 and Dell XPS 15 can benefit greatly from BIOS and driver updates ? experience greater battery life, better performance, and improved security. Here's what these key software bits do for your XPS laptop and how to update them.

• What is a BIOS?
• What are drivers?
• Update your BIOS and drivers

Full story from the WindowsCentral blog...