USG20W-VPN (USG FLEX 50W) 5.37(ABAR.2) stopped turning on

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link000
link000 Posts: 39  Freshman Member
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Hello! Updated USG20W-VPN (USG FLEX 50W is displayed in the web interface) to version 5.37 (ABAR.2). After the update, the device rebooted and worked fine for about a week. Turned off the device. I did this as usual via the web interface. The SYS indicator has stopped lighting. I waited about 3 minutes and unplugged the power supply. After turning on the device, the PWR indicator lights up red, and the WLAN indicator blinks green, and so on ad infinitum. The device does not boot and does not respond to anything. What could have happened and how can I return the device to working condition?

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  • mMontana
    mMontana Posts: 1,337  Guru Member
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    Do you have another power supply, 12v 1.5A minimum?

    Check polarities before connect power cable on the device and adapter to power socket.

  • link000
    link000 Posts: 39  Freshman Member
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    Thanks for the answer. This is the first thing I tried. I connected 12V 18A from the PC power supply, nothing changed. (

  • mMontana
    mMontana Posts: 1,337  Guru Member
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    edited March 2
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    Sorry, worth the try. 18A was a bit on the too big side for me but whatever…

    https://support.zyxel.eu/hc/en-us/articles/360014273779-Firmware-Recovery-Process-on-USG-ATP-VPN-Firewalls

    Take a read on this document. Don't go for it, wait for a Zyxel representative before try, because I don't know if it's latest and most correct document.

  • link000
    link000 Posts: 39  Freshman Member
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    edited March 2
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    mMontana, thanks for the link! I read this article. I was confused by the fact that the SYS indicator was blinking, while my WLAN was blinking green and the PWR light was red.

  • mMontana
    mMontana Posts: 1,337  Guru Member
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    I'm also confused too. Maybe a Zyxel representative knows best.

  • Zyxel_Kevin
    Zyxel_Kevin Posts: 797  Zyxel Employee
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    Hi @link000 ,

    Greeting Forum,

    Have you tried to click reset button or have any message output from the console ?

    Thank you

  • link000
    link000 Posts: 39  Freshman Member
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    edited March 4
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    Hello @Zyxel_Kevin.Yes, I tried. The device does not respond to the reset button. When connecting via the console, the TeraTherm program reacts to turning on the device, but cannot control it.

  • Zyxel_Kevin
    Zyxel_Kevin Posts: 797  Zyxel Employee
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    Could you share the console output by Private message?

    or we can have quick remote check now.

    Please share anydesk or teamviewer if you are available.

    Thanks

  • link000
    link000 Posts: 39  Freshman Member
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    edited March 4
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