Zte Mf833t Driver Top

| Check | Command | |-------|---------| | USB mode | lsusb \| grep 19d2 → should show 1405 | | Kernel modules | lsmod \| grep -e cdc -e qmi | | Network interface | ip a show zte0 | | DHCP lease | dhclient -v zte0 or check syslog | | AT commands | screen /dev/ttyACM0 or minicom -D /dev/ttyZTE |

Create a simple watchdog script:
/usr/local/bin/monitor-zte.sh

#!/bin/bash
INTERFACE="zte0"
PING_TARGET="8.8.8.8"
while true; do
if ! ip link show $INTERFACE | grep -q "UP"; then
echo "$(date): $INTERFACE down, resetting modem"
echo 0 > /sys/bus/usb/devices//authorized
sleep 2
echo 1 > /sys/bus/usb/devices//authorized
fi
sleep 30
done

Run as systemd service:
/etc/systemd/system/zte-monitor.service

[Unit]
Description=ZTE MF833T Monitor
After=network.target
[Service]
ExecStart=/usr/local/bin/monitor-zte.sh
Restart=always
User=root
[Install]
WantedBy=multi-user.target

Enable:

systemctl enable zte-monitor
systemctl start zte-monitor

Create a usb-modeswitch configuration to flip from storage to modem. zte mf833t driver top

File: /etc/usb_modeswitch.d/19d2:1432

# ZTE MF833T
TargetVendor=0x19d2
TargetProduct=0x1405
MessageContent="5553424312345678000000000000061b000000020000000000000000000000"

Enable auto-switch:

usb_modeswitch -v 19d2 -p 1432 -c /etc/usb_modeswitch.d/19d2:1432