Batch Firmware Update Using fdt2.exe

[jyijyi]

how about typing AT!BOOTHOLD first on each module

Also did you miss a space after -usbport ?

Multiple module firmware update

One more questions please: I am trying to figure out, what should be used as USB port number in this case? I am trying to use either the Loc ID from usbview.exe software or COM port number. None of them is working. Any thoughts please? THanks