More or less a month back we discovered that from the XDA developers forums a developers team called Eureka Team have achieved to root and flash the Chromecast device to develop new modifications of its software, so right now we announcing that they achieved a new way.
As a result of that month of work the same Eureka Team have develop another method to root devices so we link their official forum post here, also I'm leaving a link for the interested people back to the first rooting way here.
These two methods can take the users to a whole new level in a mid/long term that allows to try many other ideas or options through the homemade ROMs that developers create, I 'd like to include also the link to the main index listing for the Chromecast developers here.
The video-tutorial of the first version
The video-tutorial of the latest version