Xamp from Xbox Scene has released a patched version of Xplorer360 to work with the 250GB HDD.

The Good:
* Drag and drop content to and from (inject/extract) confirmed working on both Partitions 2 and 3.

The Bad:
* Do not use any sort of backup or restore image features with this patched version.
* Do not use this version with 20, 60, or 120 gig drives.

The Details:
* Changed the cluster chain length value to 00 08 39 at offset 0xF0C2.