ESP8266 Community Forum

Posted: **Mon Jul 26, 2021 10:43 am**

Hi everyone! I am connecting my ESP8266-01 to my computer using a USB to FTDI adaptor.
When I open the serial port in my computer to read it, I get the following error:

Code: Select all

ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 23200, room 16 
tail 0
chksum 0xef
load 0x00000000, len 0, room 8 
tail 0
chksum 0xef
load 0x00000000, len 0, room 0 
tail 0
chksum 0xef
csum 0xef
csum err
ets_main.c

I am using 74880 baud rate, as it is the only one that receives information.

I believe I should get a ready message instead of that error. What should I do?

Posted: **Fri Jul 30, 2021 5:54 pm**

arturo.olvrs wrote:I believe I should get a ready message instead of that error. What should I do?

It depends on the installed firmware whether you'll get a ready message, but the log says there's a checksum error and wil therefore not boot.

The only solution is to reflash the ESP with the firmware you want/need. :idea:

Posted: **Sat Jul 31, 2021 6:32 am**

QuickFix wrote:
arturo.olvrs wrote:I believe I should get a ready message instead of that error. What should I do?

It depends on the installed firmware whether you'll get a ready message, but the log says there's a checksum error and wil therefore not boot.

The only solution is to reflash the ESP with the firmware you want/need.

I have reflashed it several times, and any firmware works for me. What could I do?

Posted: **Mon Aug 02, 2021 4:50 am**

using a USB to FTDI adaptor

It is possible that the FTDI adapter is not supplying adequate power. This is an issue seen before.
In this issue on Github a guy with the same issue overcame it by changing the power supply.
If that does not work there are other ideas in the post, especially about the flash mode.

ESP8266 Community Forum

rst cause:2, boot mode:(3,6)

rst cause:2, boot mode:(3,6)

Re: rst cause:2, boot mode:(3,6)

Re: rst cause:2, boot mode:(3,6)

Re: rst cause:2, boot mode:(3,6)