ESP8266 Community Forum

Posted: **Sat May 07, 2016 7:22 am**

Hi,
I'm new to ESP8266.
I've read some guides on getting started with them and while they all differ in a few ways, they all say that I should be able to type AT or AT+GMR etc in to the terminal window and get a response. If i reset the device with a BAUD rate of 74800 I get the following in programming mode (GPIO 0 tied to GND):

Code: Select all

ets Jan  8 2013,rst cause:2, boot mode:(1,7)

If I remove GPIO 0 from GND i get the following message:

Code: Select all

 ets Jan  8 2013,rst cause:1, boot mode:(3,6)

load 0x40100000, len 816, room 16 
tail 0
chksum 0x8d
load 0x3ffe8000, len 788, room 8 
tail 12
chksum 0xcf
ho 0 tail 12 room 4
load 0x3ffe8314, len 288, room 12 
tail 4
chksum 0xcf
csum 0xcf

2nd boot version : 1.2
  SPI Speed      : 80MHz
  SPI Mode       : DIO
  SPI Flash Size : 32Mbit
jump to run usererror user bin flag, flag = c
user code done

I have tried changing BAUD rates and typing AT commands with no success.
The firmware I flashed was:

boot_v1.2.bin - 0x00000
user1.512.new.bin - 0x01000
blank.bin - 0x3E000
blank.bin - 0x7E000

I am using an AI-Thinker ESP8266 12F and I'm completely confused by the above 4 files so any help would be greatly appreciated

Posted: **Thu Oct 27, 2016 3:19 pm**

I'm having the same problem with a new esp module that i bought from aliexpress, did you find any solution please?

Posted: **Tue Jul 18, 2017 10:51 am**

I have exacly the same problem. It's the ESP-01 with the lastest firmware from https://github.com/espressif/ESP8266_AT, i'm getting the "jump to run usererror user bin flag, flag = c
user code done" error (?) message.

Please someone with the solution?

Posted: **Mon Oct 16, 2017 4:38 pm**

Hi guys,

I'm trying to put the AT firmware on my ESP-12.
I got that same error as @CraigDubya.

Code: Select all

 ets Jan  8 2013,rst cause:1, boot mode:(3,7)

load 0x40100000, len 816, room 16 
tail 0
chksum 0x8d
load 0x3ffe8000, len 788, room 8 
tail 12
chksum 0xcf
ho 0 tail 12 room 4
load 0x3ffe8314, len 288, room 12 
tail 4
chksum 0xcf
csum 0xcf

2nd boot version : 1.2
  SPI Speed      : 40MHz
  SPI Mode       : DIO
  SPI Flash Size : 32Mbit
jump to run usererror user bin flag, flag = c
user code done

I'm using the newest "ESP Flash Download Tool" (version 3.6.1.0) with these settings.

Thank you in advance.

ESP8266 Community Forum

Can flash new firmware, but can't communicate using AT

Can flash new firmware, but can't communicate using AT

Re: Can flash new firmware, but can't communicate using AT

Re: Can flash new firmware, but can't communicate using AT

Re: Can flash new firmware, but can't communicate using AT