ESP8266 Community Forum

- Tue Nov 18, 2014 11:23 am #2857 Before updating the firmware on a couple of my ESP8266's, I was able to use Putty to send AT commands and interrogate them, for example AT+GMR returned firmware version.
After updating firmware to 902, none of the AT command return any response using putty, however, the units are function perfectly in circuit... what am I missing?

[SOLVED] See post by ptamike below...

Last edited by Michaelo on Wed Nov 19, 2014 10:26 am, edited 2 times in total.

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- Tue Nov 18, 2014 11:26 am #2858 try with baud rate of 9600 (or 115200)

- Tue Nov 18, 2014 12:59 pm #2865 If I remember when I've upgraded my module, there was also a change regarding CR vs CRLF.

- Tue Nov 18, 2014 1:59 pm #2868 Baud rate is correct (don't forget it works in an application so I needed to alter the baud to 9600 in the code too), @martinayotte, I did suspect some sort of issue with LF/CR but couldn't find any reference to it... I'll search again... Many thanks guys...

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