Flashing the ESP8266 firmware on Espruino WiFi

Something odd is definitely happening.

at.cmd('', 10000, function cb(data) {
      if (data && data!="ready") return cb;
      at.cmd('ATE0\r\n', 10000, function (data) {
        console.log(data);
        // ask for version
        at.cmd('AT+GMR\r\n', 10000, function(data) {
          console.log(data);
        });
      });
    });
    // power up

] "\nAi-Thinker Technology Co.,Ltd.\r\n\r\nready\r\n" <--- "\nAi-Thinker Technology Co.,Ltd.\r\n\r\nready\r\n"
["ATE0\r\n"
] "ATE0\r\r\n\r\nOK\r\n" <--- "ATE0\r\r\n\r\nOK\r\n"
ATE0
["AT+GMR\r\n"
OK
] "AT version:0.40.0.0(Aug 8 2015 14:45:58)\r\nSDK version:1.3.0\r\nAi-Thinker Technology Co.,L" <--- "AT version:0.40.0.0(Aug 8 2015 14:45:58)\r\nSDK version:1.3.0\r\nAi-Thinker Technology Co.,L"
] "Ai-Thinker Technology Co.,Ltd.\r\nBuild:1.3.0.2 Sep 11 2015 11:48:04\r\nOK\r\n" <--- "td.\r\nBuild:1.3.0.2 Sep 11 2015 11:48:04\r\nOK\r\n"

Logging data always seems to be "behind" by one response.