title: I have a problem uploading the program on the ESP8266
body: <p>I'm having trouble loading code into my ESP8266</p>
  <p>esptool.py v3.0
  Serial port COM3
  Connecting........<em><strong><strong>.....</strong></strong></em>.....<em><strong><strong>.....</strong></strong></em>.....<em><strong><strong>.....</strong></strong></em>.....____Traceback (most recent call last):
  File &quot;C:\Users\user\Documents\ArduinoData\packages\esp8266\hardware\esp8266\3.0.2/tools/upload.py&quot;, line 66, in 
  esptool.main(cmdline)
  File &quot;C:/Users/user/Documents/ArduinoData/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py&quot;, line 3552, in main
  esp.connect(args.before, args.connect_attempts)
  File &quot;C:/Users/user/Documents/ArduinoData/packages/esp8266/hardware/esp8266/3.0.2/tools/esptool\esptool.py&quot;, line 529, in connect
  raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error))
  esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header
  esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header</p>
  <p>_</p>