i think the file needs to be updated for the new wifi dongle in the following way

The new AC 430 uses the same id for the cdrom mode but comes out as pid 8502 in the end, would that cause any issues with usb_modeswitch?

i obviously made the classic mistake and forgot the "-I" when testing on the command line :oops:
I made a copy of the original file and adjusted it to the new v2 revision of the hardware.

filecontent of: 057c:62ff

# AVM Fritz!Wlan USB Stick N v2

TargetVendor= 0x057c
TargetProduct= 0x8501 ...

This device is stuck in CD-Rom mode by default on my Kubuntu 13.04 system.

Bus 001 Device 005: ID 057c:62ff AVM GmbH AVM Fritz!WLAN USB (in CD-ROM-mode)

Windows 7 device manager lists the same usb device as:

USB\VID_057C&PID_8501&REV_0413
USB\VID_057C&PID_8501
fwlanusb5
FRITZ!WLAN USB Stick N ...