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[Bug] not able to connect with the hub #2827

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Description

@ajaxradomgk-coder

**Describe the bug
my hub doesnt want to connect to my pc
To reproduce
Steps to reproduce the behavior:

  1. Go to install firmware
  2. do everything it tells you
  3. click install then the pairing menu opens and the hub is in update mode
  4. See error code:```
    Connection Error: Connection attempt failed.

**Expected behavior**
installing custom firmware


Activity

  1. ajaxradomgk-coder commented on Sep 13, 2026

    @ajaxradomgk-coder
    Author

    i forgot to add that im using windows 11 and in the system settings the hu is visible and windows isnt paired with the hub and im using chrome

  2. laurensvalk commented on Sep 13, 2026

    @laurensvalk
    Member

    Could you please try it with https://beta.pybricks.com/ and let us know how it went?

  3. ajaxradomgk-coder commented on Sep 13, 2026

    @ajaxradomgk-coder
    Author

    the same

    Could you please try it with https://beta.pybricks.com/ and let us know how it went?

  4. dlech commented on Sep 13, 2026

    @dlech
    Member

    Which hub are you using?

    in the system settings the hub is visible

    Usually, this means that the hub is paired. So if there is a remove or forget button, click that.

  5. ajaxradomgk-coder commented on Sep 13, 2026

    @ajaxradomgk-coder
    Author

    Which hub are you using?

    in the system settings the hub is visible

    Usually, this means that the hub is paired. So if there is a remove or forget button, click that.

    im using hub 88012 and i was not conneting the hub i was checking if bluetooth sees it

  6. dlech commented on Sep 13, 2026

    @dlech
    Member

    This error has been reported a few times before. Unfortunately, no one ever reported back that they had solved the issue.

    #1355
    #2128
    #1889

    Some of the discussion might give some ideas of what to try. Usually the best way to solve these kinds of issues is to use Wireshark to log Bluetooth packets to see what is going on at a low level (instructions).

  7. added
    OS: Windows 11Issues that only occur on Windows 11 (or 10)
    software: pybricks-codeIssues with https://code.pybricks.com application
    and removed
    triageIssues that have not been triaged yet
    on Sep 13, 2026
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    OS: Windows 11Issues that only occur on Windows 11 (or 10)software: pybricks-codeIssues with https://code.pybricks.com applicationtopic: bluetoothIssues involving bluetoothtopic: flashing firmwareIssues related to fhe firmware flashing process

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