time.
This is the result.
esptool.py v2.8
Serial port /dev/cu.SLAB_USBtoUART
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 94:1d:de:1d:29:d6
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Traceback (most recent call last):
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/upload.py", line 65, in
esptool.main(cmdline)
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 2933, in main
detect_flash_size(esp, args)
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 2241, in detect_flash_size
flash_id = esp.flash_id()
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 607, in flash_id
return self.run_spiflash_command(SPIFLASH_RDID, b"", 24)
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 853, in run_spiflash_command
old_spi_usr = self.read_reg(SPI_USR_REG)
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 490, in read_reg
val, data = self.command(self.ESP_READ_REG, struct.pack('<I', addr))
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 347, in command
p = self.read()
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 292, in read
return next(self._slip_reader)
File "/Users/billbee/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/tools/esptool/esptool.py", line 2045, in slip_reader
raise FatalError("Timed out waiting for packet %s" % waiting_for)
esptool.FatalError: Timed out waiting for packet header
esptool.FatalError: Timed out waiting for packet header