Differences and handling of Huawei MU609 old and new versions

[Yegor Yefremov]

One of our customers came upon a Huawei MU609 card with IDs 12d1:1506.
Below is lsusb -t output for this card:

# lsusb -t
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=musb-hdrc/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=, Driver=usb-storage, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=musb-hdrc/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=, Driver=hub/4p, 480M
        |__ Port 1: Dev 3, If 0, Class=, Driver=ftdi_sio, 12M
        |__ Port 2: Dev 4, If 0, Class=, Driver=usb-storage, 480M
        |__ Port 3: Dev 8, If 0, Class=, Driver=option, 480M
        |__ Port 3: Dev 8, If 1, Class=, Driver=option, 480M
        |__ Port 3: Dev 8, If 2, Class=, Driver=option, 480M
        |__ Port 3: Dev 8, If 3, Class=, Driver=option, 480M
        |__ Port 3: Dev 8, If 4, Class=, Driver=option, 480M

So far mmcli couldn't detect this card as a modem. In this document
[1] is stated, that this is an old version of MU609. What is the
difference between them? Does the old MU609 provide  cdc_ether
interface?

Btw. I have encountered problems  [2] with the latest
usb_modeswitch_data version and bot MU609 new and ME909. Could you
also take a look at it?

Thanks.

Yegor

[1] https://domar.com/download/Supported%20Dongles.pdf
[2] http://www.draisberghof.de/usb_modeswitch/bb/viewtopic.php?f=4&t=2489