ESP-12 flashing problems

I have ESP8266MOD:



It was interfaced at computer.
1.
I use Don Kinzer esp_tool.exe, a command line program.

The messages that it give are:
Connecting.......connection established.
Erasing 520192bytes.......
...............
Writing block 2 o 508 at 0x000400
Download file "bin.bin" failed (-9)


2.NODEMCU programmer:
Log:
Begin find Esp8266.....
and it remains so for long time