ESP8266 Community Forum

Posted: **Thu Nov 03, 2016 6:07 am**

I've got a nodemcu and trying to upgrade to the latest dev firmware in order to get wifi.sta.sethostname working.

I've flashed nodemcu_integer_0.9.6-dev_20150704.bin which flashes ok, but doesn't support sethostname.
Then tried to build the latest dev (also tried master) with the nodemcu build website (Not added any extra modules.

Flashed the bin file with ESP8266Flasher and when restarting the nodemcu I get repeating:

Code: Select all

load 0x40100000, len 24056, room 16 
tail 8
chksum 0x9a
load 0x3ffe8000, len 2256, room 0 
tail 0
chksum 0xa8
load 0x3ffe88d0, len 8, room 8 
tail 0
chksum 0x44
csum 0x44
rf_cal[0] !=0x05,is 0x00

 ets Jan  8 2013,rst cause:2, boot mode:(3,7)

Going back to nodemcu_integer_0.9.6-dev_20150704.bin and the device boots again.

Where am I going wrong?

Posted: **Thu Nov 03, 2016 8:07 am**

Take a look around, there are a ton of such questions here and on SO e.g. http://stackoverflow.com/a/38793023/131929.

Posted: **Thu Nov 03, 2016 9:20 am**

Thanks very much - that did the trick. sethostname also working with the latest master.

Therefore, you need to flash esp_init_data_default.bin to the right memory address.

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