How do I program z-stack firmware which works with zigbee binding to cc2531EMK?

How do I program z-stack firmware which works with zigbee binding to cc2531EMK?

firmware link,
http://www.ti.com/tool/z-stack

cc2531 USB Evaluation Module Kit,
http://www.ti.com/tool/CC2531EMK

1 which z-stack I should download?
Z-Stack 3.0.0 OR Z-STACK-LIGHTING: ZigBee Light Link Solutions OR some other link?
Ref:
http://www.ti.com/tool/z-stack
http://www.ti.com/tool/z-stack-archive

2 Which hex file to program onto cc2531EMK?
I do notice I need a debugger to program the z-stack onto the board as below,
http://www.ti.com/tool/cc-debugger
However, I can NOT find the hex file for the z-stack after installing Z-Stack 3.0.0.exe on my PC.

Can any expert suggest something to help? Thank you very much.