Hi Nguyen TienChuan,
Because the MAPS-KSSF256 is the China local board, then all the document is in Chinese, no English document.
I suggest you use the KSDK2.0_MAPS-KS22 to get start, you already download that sample code.
About the build, and download, you can refer to the document in the KSDK:SDK_2.0_MAPS-KS22\docs
Getting Started with Kinetis SDK (KSDK) v.2.0.pdf
You also can refer to this video to operation it:
MAPS-KS22快速上手视频|NXP
Wish it helps you!
If you still have problem, just let me know!
Have a great day,
Kerry
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