Hello,
Hope you are doing well.
Could you clarify what the "ttug.pdf" refers to? What is the process that you did to program the devices? Is there a specific guide or document you are following?
I would recommend checking out the following documents:
Zigbee 3.0 Getting Started
DK6 Production Flash Programmer User Guide included in the SDK files under this path: SDK\docs\DK6-UG-3127-Production-Flash-Programmer
Zigbee 3.0 IoT Control Bridge UserGuide under the path JN-AN-1247.zip\JN-AN-1247\Doc
Best Regards,
Ana Sofia.