GPRS or Edge Howto?

I have reproducable problems again with the Pico. [CTRL+C] echo(1) doesn't help here. I just get it working when disconnecting it from USB and from the power source. It happens in the sim900 driver when the method init is getting called.

I currently have the problem very often using other code but I was not able to reproduce it.

This is the output (after that it hangs):

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v79.19 Copyright 2015 G.Williams
>echo(0);
=undefined
Inititialize sim900 module
> 

As well the Pico sends some weird characters sometimes when connecting it to USB (no init function has been set which could produce that):

Connected
>à ‘Ö—2|