Update 18/June/2015
* Generate your serial, change MAC address by follow this post viewtopic.php?f=5&t=3059
Step by step guidelines: Change serial number for XPEnology 5.0+
You can easy change serial number by edit file *.cfg in your boot disk/file.
First step: Use calculator by kmx23: http://1drv.ms/1Fz451J for generate your unique serial.
I. For ISO boot file
1. Install WinISO (http://www.winiso.com/products/standard.html).
2. Open XPE ISO boot file (eg. "XPEnoboot_D