# Qmi stalled MC7455

**URL:** <https://forum.sierrawireless.com/t/qmi-stalled-mc7455/12992>\
**Category:** MC/EM Series\
**Created:** [June 28, 2018, 6:01pm UTC](https://forum.sierrawireless.com/t/qmi-stalled-mc7455/12992 "2018-06-28T18:01:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![knguyen1](https://avatars.discourse-cdn.com/v4/letter/k/e9bcb4/32.png) [@knguyen1](https://forum.sierrawireless.com/u/knguyen1)\
**Post date:** [June 28, 2018, 6:01pm UTC](https://forum.sierrawireless.com/t/qmi-stalled-mc7455/12992/1 "2018-06-28T18:01:41Z")

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Hi,

I am trying to set up qmi for 4G connection. I have installed all the required libraries like: usb-modeswitch kmod-mii kmod-usb-net kmod-usb-wdm kmod-usb-net-qmi-wwan uqmi. Then I used LUCI to configure QMI cellular, these are my 4G config in network:

config interface ‘4G’  
option proto ‘qmi’  
option apn ‘myapn’  
option device ‘/dev/cdc-wdm0’  
Then I used putty to ssh into my router, I and entered the commands like:  
ifup 4G : this command skipped then goto next command.  
uqmi -d /dev/cdc-wdm0 --get-data-status : this command just stalled until ctl-C  
and any other commands that start with uqmi just stalled until ctl-C.

I think my qmi protocol hasnt been properly configured and activated.

I am using Sierra MC7455 with ZBT we826.

Can anyone please give me a hint to get through this problem.

Thank you in advance.

Tony.