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

PostPosted: Mon Jul 26, 2021 10:43 am
by arturo.olvrs
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 allets 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?

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

PostPosted: Fri Jul 30, 2021 5:54 pm
by QuickFix
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:

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

PostPosted: Sat Jul 31, 2021 6:32 am
by arturo.olvrs
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. :idea:


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

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

PostPosted: Mon Aug 02, 2021 4:50 am
by AcmeUK
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.