How to mass update a Dell bios protected by unique password ?

Hi guys,
We need to update our dell 7480 bios to the latest version 1.8.1 but the problem is that our bios are protected by password .
It's a unique password on each computer but wich uses the computer asset tag with a constant word added to it.
So I found some tools like Powershell bios password feature 
Dell Command | PowerShell Provider BIOS Passwords feature and I found  a script which makes me think that there should be a way to do it remotely via sccm for example .
https://www.powershellgallery.com/packages/DellBIOSProvider/1.2/Content/Read-DellBIOSPassword.ps1
Can you please confirm or help me to get into that and tell me if this is doable and how I should do it ? 

Thank you in advance and best regards,

Cedric