SFT1200 and USB LTE modem zte mf79u

The router work correctly with tethering. However, if you reboot the router with tethering zte mf97u connected, the SFT1200 won't boot. And until you disconnect the zte mf97u from the USB port, the router won't boot.

Hi,

To help capture the logs generated when the Opal starts with the ZTE USB modem connected, could you please temporarily configure the system log to be saved to the router’s Flash memory?

Please start the Opal, then log in to the router through SSH and run the following commands:

uci set system.@system[0].log_size='512'
uci set system.@system[0].log_file='/root/system.log'
uci commit system
/etc/init.d/log restart

After that, please connect the ZTE modem and reboot the Opal to reproduce the issue.
If the router becomes stuck during startup again, please wait for a few minutes, then disconnect the modem and restart the router normally.

Once the issue has been reproduced, could you please send the system.log file to us via private message? We will review the log and coordinate with our development team for further analysis.

/root/system.log


You may refer to the following guide for instructions on connecting to the router and downloading files with WinSCP:

After the log has been collected and sent, please run the following commands to stop writing the system log to the Flash:

uci -q delete system.@system[0].log_file
uci commit system
/etc/init.d/log restart

You may then delete the saved log file with the following command:

rm -f /root/system.log

Thank you for your cooperation and support.

Logs sent to PM

Hi,

Thank you for providing the system log.
It shows that the router kernel becomes unresponsive while initializing the ZTE USB Ethernet interface.

To help us compare your setup with our test environment and further narrow down whether the issue is related to, could you please provide the following information?

  1. The exact firmware version currently installed on the Opal, and whether Keep Settings was selected during the firmware upgrade.
  2. Whether the Opal is powered using its original power adapter and USB cable. If the Opal is not using its original power adapter, could you please test it again using the original accessories, or a reliable 5V/3A power adapter and cable, and let us know whether the issue still occurs?
  3. If available, could you please provide the software or firmware version of the ZTE modem?

Thank you again for your patience and cooperation.