hmm ,very strange behavior
Yes, I too agree with your opinion, I have never seen such strange phenomena 
Well, I think if there is no driver, it won’t work either
There is driver, it has not been observed here, If @Terry could take a little look…
Thank you for your support!!! Since there is unfortunately no solution, I will send the device back later. So there is no need to look for a solution for the Huawei LTE modem.
Hello mate,
I am sorry we have failed you, we wish your project can still go on, best of luck,
good bye…
we still hope that you solve the problems with Khadas, good luck!
I also want help with my LTE modem. Sierrra EM7455 LTE.
Modem plugged into M2x Port. and the green light came on. The device in the Aida64 software is visible. I downloaded a zip file from Serira’s site. How am I supposed to set this up. So the files that appear when I unzip are below. There is no file named So. It’s not a file named So.
I think it is libsierra.so ?
I tried but it didn’t work. Shall I try other files one by one?
Actually there are too many files and folders in the zip file. I think there must be another way.
Note: I used ADB application. And I confirmed it works.
yes, you may try, no harm in doing so 
I am not sure why they have so many different ones… perhaps due to the difference in region models ?