2

I have flashed an ESP8266 with the ESP8266 flash downloader that said my flashing had succeeded.

But when I sent an AT command from the serial monitor it didn't respond and the TX/RX LED from the ESP8266 didn't respond either. I checked all baudrates from 300-200000, but nothing.

I was using CH340 USB to TTL for flashing wired like this:

USB -> ESP8266
3,3v ->CH_PD and VCC
GND -> GND and GPI0 (only when flashing)
TX -> RX
RX -> TX

I was flashing to downgrade the firmware; the default firmware from shop was SDK 1.5.4, AT VERSION 1.1.0.0.

enter image description here

I have been frustrated with this, because this is my second module.

Improve this question
1
  • There are several files that need to upload the the ESP-01, it is unclean what you have done, what files to uploaded and where to upload also depend on the size of the flash memory you have for your ESP-01. Take a look at this =link to see if it will help.
    – hcheung
    Commented Jan 21, 2021 at 8:59

1 Answer 1

Reset to default
1

SOLVED

My module is esp8266-01S, i need to set the SPI MODE to DOUT, BAUDRATES=115200, SPI SPEED 40MHz and the software is NODEMCU FLASHER.

The important keyword is "DOUT".

I have been flash many times but with not DOUT SPI METHOD. I thought change it will not fix that. I was using QIO SPI MODE but it doesn't work.

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.