Zenbook 14 Windows Update bios update bricked, black screen

  1. System: ZenBook 14 OLED
  2. Battery or AC: Battery and AC
  3. Model: UX3402ZA-KN068W
  4. Frequency of occurrence: Always
  5. Reset OS: No
  6. Screenshot or video: No

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Detailed description:After initial cleanup and windows update installation Bios update was run automatically, I confirmed update, waited for completion and after i got confirmation of success I pressed enter key, laptop went black, and didn't show anything on screen afterwards. I have tried to hard reset it by disconnecting AC and holding power button for 30 - 40 seconds and reconnecting AC and pressing power button, but I still get black screen.

I have also tried to connect external monitor to HDMI, but also had no display output (monitor reported no signal).

Is there a way to run BIOS update from USB stick like on some motherboards? Or do I already have to send it for service?

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