Hi 明刚,
Please try to update the firmware of your J-Link ARM V8.
If you have any FRDM or TOWER board? The on-board OpenSDA debugger can be used as J-Link and debug your MCU.
Best Regards,
Robin
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Hi 明刚 聂
Could you tell us more information of your issue? (IDE, Version, OS).
Jorge Alcala
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