ESP8266 Community Forum

- Mon Dec 12, 2016 11:00 am #59398 Hey all,

I am new to the community, and fairly new to ESP, although have some electronics experience under my belt.

I'm trying to flash a raw esp12 module, and keep having the same issue over and over. I have tried adjusting the params in esptool.py, adjusting my baud rate, and different firmware but all to no avail. As you will see from this output, I am on Windows and flash from Powershell.

Code: Select allPS C:\Python27\Scripts> python esptool.py -p COM4 write_flash --flash_size=detect 0 esp12_firmware\firmware_last.bin
esptool.py v1.2.1
Connecting...
Auto-detected Flash size: 8m
Running Cesanta flasher stub...
Flash params set to 0x0020
Writing 565248 @ 0x0... 564224 (99 %)
A fatal error occurred: Timed out waiting for packet header


Every time I try to flash, I get to 99% and then get the error. The image below shows my setup.



If anyone can offer any insights into why I cannot get past 99%, I would be very grateful.

Thanks,
Paul

- Mon Dec 12, 2016 7:19 pm #59436 After reviewing some of the other issues in forum posts, and some of the responses, I decided to flash at 5v and the operation worked perfectly first time. I have no intention to run the device at 5v, but for flashing this worked....for me, I am not advising others to do the same.