EM9191 FDT2.exe multiple firmware and PRI image loading

I was able to get it done in Linux only. The Windows app refuses to do it properly. I have opened a ticket with my devices distributor and they stated that Sierra has acknowledged that it is an issue and are working to resolve it.

I will test your exact syntax as soon as I get a second to do so again. What version of Windows are you using?

I am using Windows 10.
But I think there is something wrong on the fdt2 tool (using -mi option) which will overwrite the slot 1.

Yes, this is my issue, too.
so, how to fix it? I need to programming image FW1 FW2 FW3.

will you consider linux machine ?

Can you provide upgrade method in Linux? Thanks.

Does this help?