LPC5536-EVK unable to connect wire for probe index 1

[marco_xia]

When I use the IDE tool to import hello world demo in LPC5536-EVK boards, the following error is displayed when I click debug： 

The device manager displays the contents of the red box in the figure, but the three identifiers on the left are not displayed.and the MCU_LINK firmware runs normally.

The software version is as follows:

MCUXpresso IDE v11.8.0_1165;SDK_2_10_2_LPCXpresso55S36;MCU-LINK_INSTALLER_3.108.exe

SO. How do I solve this problem?

thank you

[Alice_Yang]

Hello @marco_xia 

1) Enter ISP mode, use blhost erase all flash, also can use GUI Flash tool in MCUXpresso IDE to erase.

2）Update debug firmware.

3) Open a new IDE Workspace, import hello world demo, then debug again.

BR

Alice

[marco_xia · Accepted solution]

thanks for your answer. the rootcause  maybe Trustzoom demo leads DAP err,so blhost can't connect to

EVK in ISP mode.we use keil  tools to recover it in ISP mode at last.