ESP8266 Community Forum

- Tue Dec 08, 2015 5:46 pm #36024 Download the following free book

http://neilkolban.com/tech/wp-content/u ... r-2015.pdf


read pages 59-60 on bootup requirements

If all else fails buy a nodemcu 12 e for $6 and get more I/O pins and memory from http://www.banggood.com/banggood

Good luck

- Wed Feb 24, 2016 1:05 pm #41812

So it seems that changing the baud rate with the command AT+IPR=9600 locks the ESP8266 into some kind of mode where it runs, but the blue led is stuck on and it can't be accessed with normal AT commands.

Does anyone know how to re-flash the firmware when it is in this state? I am on a Mac, and have tried using a windows VM but it seems to not be able to sync with the chip. I am sure of the wiring as it was working until I changed the Baud rate. I am grounding GPIO0 when trying to flash.

Any help would be very much appreciated as I have two units in this state now. Their default baud rate was 115200, but I am using softserial on an Arduino so it needs to be slowed down a bit.

Hey there, have you been able to resolve this? I did the exact same thing a couple weeks ago and have been troubleshooting it ever since.

I've tried doing so on both mac and pc and still doesn't seem to be 100% functional. I now have the blue light off and get AT=OK response but can't do much else without "Error".