Firmware for PC SN520 NVMe WDC 256GB SSD

Greetings

I have a Dell Laptop with a PC SN520 NVMe WDC 256GB SSD

I am trying to install Linux but it won’t detect the SSD. Could you please tell me how I can get the latest firmware for this SSD?

Thanks Much

Fred.

Never mind, I have downloaded Sandisk Dashboard and it says that the firmware is up to date.

Thanks

Fred.