This is a brand new Feather Huzzah trying the blink example.

I got this odd error message and at 1st glance, I have no idea what to do.

Chip is ESP8266EX
Features: WiFi
WARNING: Detected crystal freq 20.39MHz is quite different to normalized freq 26MHz. Unsupported crystal in use?
Crystal is 26MHz
MAC: 00:08:ff:00:00:00
Uploading stub...
Running stub...
Traceback (most recent call last):
  File "/home/hexdump/.arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/", line 65, in <module>
  File "/home/hexdump/.arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/", line 2909, in main
    esp = esp.run_stub()
  File "/home/hexdump/.arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/", line 637, in run_stub
    p =
  File "/home/hexdump/.arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/", line 292, in read
    return next(self._slip_reader)
  File "/home/hexdump/.arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/", line 2057, in slip_reader
    raise FatalError('Invalid head of packet (0x%s)' % hexify(b))
esptool.FatalError: Invalid head of packet (0x46)
esptool.FatalError: Invalid head of packet (0x46)


What did ADAFRUIT's customer support say when you contacted them about their product?

Thank you Spy for the gentle nudge into the proper channel. I didn't know where to turn