ESP8266_esp12 hookup

The ESP01 I'm using with your new module for ESP0.25 - and it works good so far; without of the http module. I can not get request or can not post informations.
The ESP12 only flashes once blue on plugin the Pico to USB port.
With the demo source code it brings an error after reset, because there is no response:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v79.171 Copyright 2015 G.Williams
>echo(0);
=undefined
>Uncaught No 'ready' after AT+RST
 at line 2 col 22
      if (err) throw err;
                      ^
in function "callback" called from line 1 col 125
...k("No 'ready' after AT+RST");
                               ^
in function "b" called from line 1 col 16
{c=void 0;b&&b()}
                ^
in function called from system
 

It seems like, the RX/TX is not correctly working?...