nRF52840-Preview-DK J-Link Error

nRF52840-Preview-DK LED5 is off, J-Link Error. 

I press IF BOOT/RESET key then poweron the PDK, no  BOOTLOADER removable disk drive letter appears, I have installed the driver. [mbedWinSerial_16466.exe]

Can the PDK J-Link still be repaired? What else can I do?

08:41:51.086	Failed to recovering application core core. Error: [object Object], message: Batch task recover failed, [jlink] JLINKARM_DLL_ERROR
08:41:51.201	Error: Failed with exit code 1. Failed to device info one or more devices: * 683174685: [jlink] JLINKARM_DLL_ERROR, code: Nrfjlink. Message: Operation device-info failed, [jlink] JLINKARM_DLL_ERROR.
08:41:51.201	Using nrfutil device to communicate with target via JLink
08:41:51.247	Error: Failed with exit code 1. One or more batch tasks failed: - [jlink] JLINKARM_DLL_ERROR, code: Nrfjlink. Message: Batch task recover failed, [jlink] JLINKARM_DLL_ERROR.
08:41:53.390	Error: Failed with exit code 1. No devices with requested serial number(s) or trait(s) found.
08:41:53.390	Error: Failed with exit code 1. No devices with requested serial number(s) or trait(s) found.

Related