4g-ufi-xx: Driver

4G, UFI, USB modem, Linux, driver, RNDIS, QMI, ECM

lsusb -t | grep -A 5 "Modem" Force load, for example:

If you have a (or similar Android-based USB 4G stick/dongle), Linux often doesn’t auto-load the right driver. Here’s how to prepare the driver environment so the modem is recognized as a network interface (instead of just storage or ADB). 1. Identify the device Plug in your UFI stick and run: 4g-ufi-xx driver

# 4G-UFI-XX DefaultVendor=0x05c6 DefaultProduct=0x9091 MessageContent="5553424312345678000000000000061b000000020000000000000000000000" Then run:

lsusb Look for something like: Bus 001 Device 004: ID 05c6:9091 Qualcomm Android 4G, UFI, USB modem, Linux, driver, RNDIS, QMI,

ip link show You should see wwan0 or usb0 . Using ModemManager + NetworkManager:

Create a rule (example):

lsusb -t sudo apt update sudo apt install usb-modeswitch usb-modeswitch-data modemmanager wvdial 3. Switch from storage to modem mode Many UFI sticks start as a CD-ROM. Use usb_modeswitch manually if needed. Find your idVendor:idProduct (e.g., 05c6:9091 ).

Here’s a draft for a forum or blog post about preparing the driver for a on Linux (e.g., Ubuntu/Debian). You can adjust the title and tags as needed. Title: 4G-UFI-XX Driver Prep – Get Your USB Modem Working on Linux Identify the device Plug in your UFI stick