Suggest for our new LTE module support!

As we have try our best to use RB411u as a LTE modem, We want to get our new LTE module working as well.
It’s based on Qualcomm 9X15 platform.
I see USB Modem on RB411U 's usb resource.
but still no LTE or usb ports found .
Please help.Thanks a Lot
Here is support.rtf

Hi, First please update to latest 6.27 Version
Could you be more specif what exact model , datasheet would be very helpful because lot of them have one baseband chip but, have different firmwares based on country and vendor.

yes, i have tried to do that.
here is the specific model.LM111C

here is the 6.27 suport.rtf.
please help. need so .

may be our linux based dail script could help.can you leave your email for me?