Verizon Wireless Modem Connectivity issues

Just got a GL-MT300A, and I’m trying to set it up with my MiFi® 4G LTE Global USB Modem U620L. When I plug the modem into my 300A’s USB port, I get lights on the modem to light up, and it looks like it is getting power and signal, but my 300A never sees the modem. I’ve looked in the Tethering and 3G tabs, but both places say to Plug in Modem or Phone. The modem is generally host-less, and when I use it with my laptop, it shows up as an Ethernet connection.

Any thoughts on how to fix this?



There is another post asking about this modem which don’t have an answer.

Can you use ssh to login the router and get the output of the following command when the modem is connected?

ls /dev/

this link may help, Alfie:


This second link gives good instructions.



also, perhaps installing the kmod-usb-net-rndis package would help?

or kmod-usb-net-cdc-ether depending on which mode the usb dongle is in

Thanks for the link. Very helpful.

I will check if modeswitch has added this. If not, I will add it.

I just went through this same exercise and made the following notes for myself. As a neophyte myself, consider the recommendations with caution. Nonetheless, these work for me with the GL-AR300M and the Novatel U620L on Verizon:


The wireless modem needs to be configured for “enterprise mode” which makes the host see it as a modem instead of a mass storage device. It also provides access to AT commands via serial port.

To make this happen, the host (router) needs to have the usb_modeswitch package installed. OpenWRT comes with this by default.

When the router boots, the usbmode daemon looks for USB devices in /etc/usb-mode.json

/etc/usb-mode.json to include:

“1410:9020”: {
“*”: {
“msg”: [ ],
“config”: 4
After making this change and rebooting the router, test with

root@GL-AR300M:/dev# lsusb
Bus 001 Device 003: ID 1410:9022 Novatel Wireless
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Confirm that the Novatel modem returns ID 1410:9022 instead of the default ID 1410:9020.


TTY port

Need to tell the router to add the optional serial driver for the modem:

Edit /etc/rc.local to add

echo ‘1410 9022 ff’ > /sys/bus/usb-serial/drivers/option1/new_id
just prior to exit 0


Modem Interface

Add Verizon modem interface through the console

great. I have added to the firmware and it will appear in next release.

Just wondering if this issue has been resolved. Jut bought the router, updated firmware to 2.261 but it still does not recognize Verizon U620L. Do I have to do something specific to the U620L to have it recognized? Very frustrating…

U620L should support hostless mode and you should be able to set up as tethering.