Help- Parameter settings

[awahba]

Hi,

I am using an STM32L0 board. I am able to put it in DFU mode and can see and connect to it using the demo site (Windows, Edge on Windows 10).
Once connected, I see several interfaces, and select the flash memory.
I am not sure what parameters to use for the DFuse start, and the upload size.
I am also not sure which format is needed for the file download (to USB device). I am currently using the IAR for development and St Mx programmer to upload the .hex firmware file generated by IAR.
I highly appreciate your help.
Thanks,
Ashraf