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Products & Technology XIAO
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Hi alllenpitts,

See the Wiki section Enter Bootloader Mode
This operation is very difficult, so do not give up and try several times.

If it did not work, the following steps may be helpful.

  1. Is “Indication of something representing XIAO” listed under “Universal Serial Bus Devices” in the Device Manager?
    Note: not “Ports (COM & LPT)”.
  2. If not, this method does not work.
  3. If so, right click “Indication of something representing XIAO” and “Update Driver”
  4. select “Browse my computer for drivers”
  5. select “Let me pick from a list of available drivers on my computer”
  6. select “USB Serial Device” and click “Next”

If you are lucky, it will be restored.
If this method is not available, the bootloader will may have been corrupted. See the link below.

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