Tiros released a new version of NandPro, the original cmd-line tool that allows you to read/flash the Xbox360 NAND via LTP or USB and now also comes with support for Xilinx CPLD flash (for RGH chips), and PostMonitor (for developers - monitoring Post Boot codes only).
What's new/fixed:
* Requires new v3 .hex for arm
* Suppport added to flash .xsvf files by jtag
* Support added for post monitoring and logging