Hi Zhijun wu,
1. Please check the default board configuration.
You can refer to TWR-KV58F220MUG.pdf in the TWR-KV58F220M-QSP
But take care, the TWR-KV58F220MUG have a error about J29 and J28, J29 should be open, J28 should connect 1-2.
Please make sure your board's configuration is in default.
Then try again.
2. If item 1 still not OK, please try to use JLINK firmware, which you can find int TWR-KV58F220M-QSP, the folder is:TWR-KV58F220M-QSP\TWR-KV58F220M_Quick Start Package\OpenSDA Application\Segger OpenSDA\JLink_OpenSDA_V2_1_2015-10-13.bin
1) install JLINK driver
SEGGER - The Embedded Experts - Downloads - J-Link / J-Trace
2) unplug your board, then press RESET button and hold on it, at the same time, plug board to your PC, you will find your board is a device named as"BOOTLOADER"
3) Send "JLink_OpenSDA_V2_1_2015-10-13.bin" to "BOOTLOADER"
4) unplug your board and plug it again.
You will find your board is a device named as "JLINK"
5) Use JLINK command to check ,whether you can find Cortex-M7?

If the core is found, then you can download your code again with JLINK debugger.
Please use the SDK_2.0_TWR-KV58F220M sample code to test it.
You can find KSDK2.0 from this link:
Welcome to Kinetis Expert | Kinetis Expert
Click build an SDK, and generate the SDK_2.0_TWR-KV58F220M package.
Wish it helps you!
Have a great day,
Kerry
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