USB modem not initialized

[AndreasT]

Hello.
I have an ASUS RT-AC3200 with Merlin version 384.13_10 which I believe is the latest available. I'm posting this here since I doubt the issue is Merlin related.
I just got an USB modem (Huawei E3372) to use the Dual-Wan feature, but the initialization of the modem seems to continuouly crash and it is disconnected. See attached log snippet. It momentarily appears in the dashbord as an USB modem but then is dropped when it is disconnected after a few seconds. See attached screenshots.
I have checked that the modem is on the supported list here https://www.asus.com/event/networks_3G4G_support/
I have configured the modem in Windows to ignore the pin code but that didn't make a difference. Modem works in Windows.
I have tried both USB ports, no difference.

Feb 23 13:16:48 kernel: usb 2-1: new high speed USB device using ehci_hcd and address 55
Feb 23 13:16:48 kernel: cdc_ether 2-1:1.0: eth4: register 'cdc_ether' at usb-0000:00:0b.1-1, CDC Ethernet Device, 00:1e:10:1f:00:00
Feb 23 13:16:48 hotplug: add net eth4.
Feb 23 13:16:49 hotplug: set net eth4.
Feb 23 13:16:51 kernel: usb 2-1: USB disconnect, address 55
Feb 23 13:16:51 kernel: cdc_ether 2-1:1.0: eth4: unregister 'cdc_ether' usb-0000:00:0b.1-1, CDC Ethernet Device
Feb 23 13:16:51 hotplug: remove net eth4.
Feb 23 13:16:51 kernel: usb 2-1: new high speed USB device using ehci_hcd and address 56
Feb 23 13:16:51 kernel: scsi153 : usb-storage 2-1:1.0
Feb 23 13:16:52 kernel: usb 2-1: USB disconnect, address 56

I hope somone can cast some light on this and help me get it working.

 

[AndreasT]

Bumping this, still hoping somone can help me solve this.