WinPE and Changing USBComp mode EM7430


I am trying to send AT commands to a EM7430 in WinPE 64 bit.

Usually to do this in Windows 10 I would change the mode to mode 8 it then opens a COM port under the modem.
After this I send the AT Commands to the modem.

I would like to now do the same under WinPE.
But the mode doesn’t seem to change.

I am using the “Sierra Wireless Set USB Composition Application”
Version : 2.0.1509.0

Anyone know of either another way to get to AT commands on WinPE.
Or know how to get the mode to change.