[5.42.1] USG FLEX 50W hangs after insert USB Modem

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alexey
alexey Posts: 198 image  Master Member
First Comment Friend Collector Eighth Anniversary
in Security

USG FLEX 50W on new 5.42.1 became fully unresponsive (don't reboot by watchdog) after inserting 3G USB Modem (ZXIC Incorporated MTS Mobile Boardband). Helps only manual poweroff.

изображение.png

On 5.38 device work fine with this modem.

Console log in attach.

console dump.txt

All Replies

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,540 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
    edited May 12

    Hi @alexey ,

    Your 3G USB Modem is not on our supported device list. We can only guarantee compatibility with the 3G dongles included on that list. We recommend purchasing a CPE with a supported dongle, these are listed at 3G Dongle Document on this link:

    Download Library | Zyxel Networks

    image.png

    Zyxel_Judy

  • alexey
    alexey Posts: 198 image  Master Member
    First Comment Friend Collector Eighth Anniversary

    i already read dongle compability.
    but why device hangs with connected unsupported device, instead this show "no connected device message"?
    and via 2-3 reboots, device start work with modem, and hangs after 20-40 minutes of work.
    and 5.38 work perfect with it.

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,540 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    Hi @alexey ,

    The compatibility model list includes models that we have fully tested and can guarantee compatibility for. For other models, we do not restrict usage; however, we are unable to guarantee compatibility.

    Your modem may work well with version 5.38 but not with 5.42, possibly because it is not fully compatible with some of the new features or configurations introduced in 5.42. So, we recommend using a CPE with a supported dongle.

    Zyxel_Judy

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