.: Flashing NodeMCU V2 ( ESP8266) 32Mbit with Open SDK Firmware

Monday, June 8, 2015

Due to Memory/Flash Size Layout change flashing the firmware on esp8266 with esptool.py doesn't works

Most of will see following ( Baud 74880) and user code will not boot.

The solution to problem is simple just use the flash tool from bbs of expressif ( official site) with following settings and it will work.

SPI Speed – 40mhz

SPI mode – DIO

Flash Size – 32Mb

0x00000.bin and 0x40000.bin at same 0x00000 and 0x40000 location.

.