Can't enter bootloader, plus other mysteries

I think I fixed it!

Reading other threads, learned about dump().

>dump()
// Code saved with E.setBootCode
var WIFI_NAME = "XXXXXX";
var WIFI_PASS = "XXXXXX";
var MQTT_HOST = "192.168.1.145";
if (typeof __non_webpack_require__ == 'undefined') {
  var __non_webpack_require__ = require;
}
var mqtt = __non_webpack_require__("MQTT");
var wifi = __non_webpack_require__("EspruinoWiFi");
var client = mqtt.create(MQTT_HOST);
client.on('connected', function() {
  client.subscribe("root/branch");
});
client.on('publish', function(pub) {
  console.log("topic: "+pub.topic);
  console.log("message: "+pub.message);
});
wifi.connect(WIFI_NAME, { password: WIFI_PASS }, function(err) {
  if (err) {
    console.log("Connection error: "+err);
    return;
  }
  console.log("Connected!");
  client.connect();
});
=undefined

That's my project code! And a clue! // Code saved with E.setBootCode.

Let's try this then...

>E.setBootCode('')
Erasing Flash...
Writing...
Compressed 114368 bytes to 8
Checking...
Done!
=undefined
>dump()
=undefined
> 

Hooray! Right?

>var wifi = require('EspruinoWiFi')
ERROR: SD card must be setup with E.connectSDCard first
WARNING: Module "EspruinoWiFi" not found
=undefined
>

fml