Gael360 released an update of wxHdd(info) (a tool to read the Xbox 360 HDD on PC) and wxPirs (to tool to open Generic Xbox 360 Container files).
What's new/fixed on wxHdd since v1.0 (translated from french):
* Experimental support for memory cards (v1.0.1)
* Fixed some bugs (v1.0.1)
* Handling fragmentation of disc (v1.2)
* Opening of several partitions (v1.2)
* Extracting directories (v1.2)
* Instant/Direct opening of files (v1.2)
* Note: wxHdd does not have a feature to 'add files' (write on HD/Image) yet.
Gael360 also released a new tool called wxPirs v1.1:
This tool will allow you to open files of the following types: PIRS, LIVE or CON, which are generic container files on the Xbox360.
More info about this format is available on free60.org.
These 3 formats are identical, the only difference are the first 4 characters of the file (PIRS/LIVE/CON), which is where their names come from, and what they are used for:
* PIRS: used to store themes or gamertags for example
* LIVE: used to store content downloaded from Xbox LIVE
* CON: these are a bit special, they are the only ones of this format that are create by the Xbox 360 itself. They are used to store saved games.