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4g-ufi-xx Driver Apr 2026

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

sudo nano /etc/usb_modeswitch.d/05c6:9091 Content:

4G, UFI, USB modem, Linux, driver, RNDIS, QMI, ECM 4g-ufi-xx driver

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

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

sudo modprobe qmi_wwan echo "05c6 9003" | sudo tee /sys/bus/usb/drivers/qmi_wwan/new_id Make it permanent with a udev rule:

Also check modes:

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

lsusb -t | grep -A 5 "Modem" Force load, for example: Using ModemManager + NetworkManager: lsusb -t sudo apt