Hi @baska !
Did you already take a look at this other thread here in Toradex Community regarding the same device?
Maybe this thread (and the references therein) can help you.
Please let us know 
Best regards,
EDIT: @drew.tx found the USB Driver Document from Quectel referenced in the related thread: Quectel_WCDMA & LTE_Linux_USB_Driver_User_Guide_V1.8 | Quectel