SparkFun Electronics Forum

Posted: **Thu Aug 27, 2015 12:58 pm**

Hi,
I need your help guys

.. recently I updated my ESP8266 Thing with the NodeMCU Firmware. But now I want to go back on default AT Firmware. I have some problem to Flash Firmware with the latest version of the firmware. I have found nothing on the sparkfun website to talk about it or how to do that.

Firmware : AI-v0.9.5.0 AT Firmware.bin
Flash Tool : ESP8266 Flash Downloader
Address : 0x00000

Error that I receive at the end.

Writing at 0x0007dc00... (99 %)
Writing at 0x0007e000... (99 %)
Writing at 0x0007e400... (99 %)
Writing at 0x0007e800... (99 %)
Writing at 0x0007ec00... (99 %)
Leaving...
Failed to leave Flash mode

I don't understand what's is wrong. My final objectif is return the unit with the default AT Firmware latest version.

Regards,

Posted: **Fri Aug 28, 2015 1:19 pm**

Any one can help me ?

Posted: **Sat Aug 29, 2015 11:19 am**

there's a big forum of ESP8266 users (not Sparkfun).
A quick Google turned up
http://www.esp8266.com/

Posted: **Sun Jul 02, 2017 8:07 am**

This is normal, because there is no possibility to leave the Flash mode. This means your programming was successful.

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