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

link000
link000 Posts: 39  Freshman Member
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in Security

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: 1,389  Guru Member
    50 Answers 1000 Comments Friend Collector Fifth Anniversary

    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
    First Comment Friend Collector Fifth Anniversary
    https://community.zyxel.com/en/discussion/comment/62687#Comment_62687

    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: 1,389  Guru Member
    50 Answers 1000 Comments Friend Collector Fifth Anniversary
    edited March 2

    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
    First Comment Friend Collector Fifth Anniversary
    edited March 2

    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: 1,389  Guru Member
    50 Answers 1000 Comments Friend Collector Fifth Anniversary

    I'm also confused too. Maybe a Zyxel representative knows best.

  • Zyxel_Kevin
    Zyxel_Kevin Posts: 885  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 500 Comments

    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
    First Comment Friend Collector Fifth Anniversary
    edited March 4

    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: 885  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 500 Comments

    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
    First Comment Friend Collector Fifth Anniversary
    edited March 4

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