esp8266 - NodeMCU Flashing Error -


my board nodemcu devkit v1.0. have been trying flash nodemcu custom build using cloud service.(on top of standard selected ones add dht library) binary name nodemcu-master-8-modules-2016-11-03-03-23-44-integer believe uses master build 1.5.4.1

first attempt:

i used esp8266flasher.exe windows. selected custom build binary , flashed address 0x00000.(baud:230400 flash speed:40 mhz spi mode:dio flash size:4mbyte)

at point board repeatedly rebooting(blue led going on/off @ high frequency)

so have gone through documentation , learned problems due change of esp_init_data_default.bin when upgrade nodemcu 0.9 build.

second attempt:

i used erase_flash using esptool.py 

esptool.py --port  /dev/tty.slab_usbtouart erase_flash

and flashed custom build again.

third attempt:

i did erase_flash via esptool.py. time downloaded sdk patch 1.5.4.1 , flashed esp_init_data_default.bin address 0x3fc000 custom build 0x00000.

there no rebooting error when ran esplorer , connect board following message:

port open 9600  communication mcu... got answer! autodetect firmware... communication mcu established. can't autodetect firmware, because proper answer not received (may unknown firmware).  please, reset module or continue.

and when reset module gibberish letters.

i tried using both dev , master branches both integer , float binaries , kept getting same results.

do have suggestions?

there lots of questions failed flashing attempts (despite documentation being pretty detailed). example here: https://stackoverflow.com/a/38793023/131929

it appears me have flashed firmware, though.

try setting baud in esplorer 115'200 per http://nodemcu.readthedocs.io/en/latest/en/upload/. "can't autodetect firmware" issue esplorer. learned not depend on that.


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