ESP8266 Community Forum

Hello.
I'm trying to flash last AT firmware to esp-wroom-02, using ESP8266 Download Tool V3.3.6. The tool syncs ok but at one point the process fails.

This is the last output messages for Download Tool:

offset : 2088960
Erasing flash in old style...
*********************
pic path: ./RESOURCE/DOWNLOAD_S.bmp
***********************
Took 0.16s to erase flash block
Erasing flash in old style...
Took 2.83s to erase flash block
Erasing flash in old style...
Took 0.18s to erase flash block
Erasing flash in old style...
Took 0.20s to erase flash block
Erasing flash in old style...
Took 0.19s to erase flash block
Erasing flash in old style...
Took 0.20s to erase flash block
TEST !!!!
FAST BAUD: 115200
fACTORY REBOOT MODE: False
Running Cesanta flasher (speed 115200)...
*********************
pic path: ./RESOURCE/ERROR_S.bmp
***********************
KEY PATH NONE...
com closed

I've tried many times but the same thing happens always.
Has anyone suffered the same problem?

Hello.

Finally the problems have been solved. It was with the usb-ttl adapter.

Thanks.