LTE7490-M904 default admin password after upgrade

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sviykaz
sviykaz Posts: 11
10 Comments
edited January 4 in Mobile Broadband

Hello,
I managed to upgrade an LTE7490-M904 from firmware version 1.00(ABZK.0)C0 to 1.00(ABQY.6)C0. All worked fine (web UI, connections, everything) until I had to hard reset the configuration. Now the router is visible on the net (bot LAN and WiFi), but any admin password I try is not valid. Tried with the one printed on the label, with "1234", "12345678", "admin" and empty - nope. How can I get my router back?

Thanks!

S.

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  • SELBERG
    SELBERG Posts: 268  Master Member
    First Anniversary 10 Comments Friend Collector First Answer
    edited July 2023
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    Try a power off of your 7490 for about 2 minutes.....

  • sviykaz
    sviykaz Posts: 11
    10 Comments
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    Thanks, but no way. I have access to the UART console, all is fine except admin password…

  • SELBERG
    SELBERG Posts: 268  Master Member
    First Anniversary 10 Comments Friend Collector First Answer
    edited July 2023
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    https://community.zyxel.com/en/discussion/comment/54419#Comment_54419

    Did you try a power off or not?

  • sviykaz
    sviykaz Posts: 11
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    Yes, of course! :-)

  • SELBERG
    SELBERG Posts: 268  Master Member
    First Anniversary 10 Comments Friend Collector First Answer
    edited July 2023
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    Any changes with login 192.168.2.1

  • SELBERG
    SELBERG Posts: 268  Master Member
    First Anniversary 10 Comments Friend Collector First Answer
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    If you did your hard reset in web GUI try if possible to do it instead on your unit!

    reset.jpg

  • sviykaz
    sviykaz Posts: 11
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    Nope. Router WEB interface on WiFi is on 192.168.1.1, on LAN it's on 192.168.2.1 - but admin password is not valid on either interface (including UART console)

  • sviykaz
    sviykaz Posts: 11
    10 Comments
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    Made hardware reset, but the admin pwd on the label is not accepted as valid, nor is any of the "known to be good" ones…

  • SELBERG
    SELBERG Posts: 268  Master Member
    First Anniversary 10 Comments Friend Collector First Answer
    edited July 2023
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    Is it possible to do a hard reset again on your unit? Press @ least 15 secs with a pin in the hole.....

  • sviykaz
    sviykaz Posts: 11
    10 Comments
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    Yeah, tried several times, no change.

    My guess: older firmware used a hard-coded password, new firmware uses an algorithmically generated password (i.e., based on modem serial number, like in VMG8825).

    Is there a possibility for someone to generate such a password, given the relevant data (modem S/N, MAC addres or whatever)?

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