Read the Dell policy here.

Basically, Dell is admitting that damage is caused by buggy or faulty software.
* That is a false statement.

Technically what difference does it make if a representative asked a customer to install the BIOS update or your pop out asks same thing?
* As stated in the policy document, "The Dell Software team states that an automated software suggestion to install any driver (BIOS update) is not the same as a Dell Support representative dictated direction. This means that if you updated the BIOS without any direction from Dell Support representative, and the BIOS update broke the motherboard CMOS, you have to buy the replacement motherboard either from Dell or a 3rd party seller.".

If in case pop out BIOS update is not safe than why Dell has pop out bios updates?
* The BIOS is safe. Many XPS desktop owners have run that BIOS successfully. But users have to run it correctly =

* Download/Save the BIOS file to the Windows desktop
* Disconnect all external USB drives from the desktop. Leaving only the following devices connected to the rear of the desktop =
power cable
monitor video cable
wired USB mouse
wired USB keyboard
ethernet cable
* Close all unnecessary software applications (Steam, Anti-virus, etc. )
* Find the saved BIOS file on the Windows desktop
* Right click the file and choose, "Run as administrator". Note, you do not need to "extract" the file. Just run it
* Follow the prompted instructions. The desktop will reboot on its own. Do NOT force it to reboot or power off

Check out community page for XPS, there are so many customers who have same problem and  a lot of customers with same problem even are does not bother to come on to community page.

Why first post was locked? there was not any thing abusive or wrong. If DELL is going to choose what they want to discuss on there forum than what is the point of having a open forum.

 But users have to run it correctly =

* Download/Save the BIOS file to the Windows desktop
* Disconnect all external USB drives from the desktop. Leaving only the following devices connected to the rear of the desktop =
power cable
monitor video cable
wired USB mouse
wired USB keyboard
ethernet cable
* Close all unnecessary software applications (Steam, Anti-virus, etc. )
* Find the saved BIOS file on the Windows desktop
* Right click the file and choose, "Run as administrator". Note, you do not need to "extract" the file. Just run it
* Follow the prompted instructions. The desktop will reboot on its own. Do NOT force it to reboot or power off

I followed all the instructions mentioned in your text above. If even after that your BIOS fries out motherboard than DELL must check there BIOS before putting it on cloud.

Further, instead of repeating your policies, try to correct your BIOS. i had used other dell PC's for years but have not seen such a problem. With your XPS series a lot of customers are finding same problem. If it is happening with so many people that means either don't post BIOS update or  don't post buggy BIOS. 

Absolutely, there is no reason that your BIOS update damage a mother board or any electronic component on it. It only happens if your so called software engineers make a mistake in writing firmware.

MUST take responsibility of your own mistake and be accountable to your customer!