I Need to Flash the stm32L431 via CAN bus. I see the STM32CubeProg says it supports CAN. So do I understand correctly that I could simply use a USB-CAN device like those listed below to Flash the board? THx

[JWrig.13]

https://www.usbgear.com/usb-to-can-bus.html

https://www.kanda.com/products/Lawicel/CANUS

[Tesla DeLorean]

As I understand it the CAN support is via the ST-LINK/V3SET

That of course doesn't preclude you from simply writing your own app to implement the System Loader's CAN protocol.