GTV FileSystem

Revision as of 01:48, 10 January 2011 by Jbjonesjr (talk | contribs) (Added link to the version number page)

The Google TV File System is similar to most other Android Operating Systems.


Updates to the Google TV, unlike most the incremental updates that most Android phones receive, come as a complete file system meant to replace the previous. It is assumed that since Google TV devices are meant to be connected to high speed internet connections, downloading a full File System is more palatable than on a limited-bandwidth mobile device.

Updates are retrieved without user intervention from the Google Servers. You can use the device version number to check your current file system implementation (See GoogleTV - Version Numbers for more information). Updates are distributed as signed zip files including a recovery, system, and userdata image. The current update packages are:

Logitech Revue b42449

List of all updates for:

File System Obfusication

How to access the File System contained within an image

The Zip File is a simple matter to extract, however the images within them tack some massaging in order to explore. While they are a typical SquashFS File System, they have some padding bytes that prevented a simple "Unsquashing."

  • It would be great if we could create a way to use dd to truncate the image instead of using a hex editor. You should be able ot somehow grep for the start and then dd the proper bits into a new file that could be explored correctly.*

Some data on the process is available here:,_Edit,_and_Re-Pack_Boot_Images

GTV Recovery Mode vs GTV(System) Mode

GTV Boot Loader

The Boot Loader is included on the File System, currently in the X directory. The Boot Loader is based off of the Y Loader (More information can be found at Z). For the Sony BlueRay player, the Boot Loader is ABC.

Files of interest within the File System

So, why can't I just edit a File System and use it to update my review?