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PC cannot recognize USB-kw24d512 USB dongle

Question asked by lun wang on May 2, 2017
Latest reply on May 11, 2017 by lun wang

My PC cannot recognize usb-kw24d512 as the virtual com port. there is the same problem when I change to other PC.

Several days ago ,I try to update the firmware through through j-link ,but USB dongle cannot contact with j-link and flash unsuccessfully.

After that, my PC can not recognize the USB dongle till now.

Please help to solve this problem. thanks. 



J-link log:

Application log started
 - J-Flash V6.12j (J-Flash compiled Feb 15 2017 18:01:27)
 - JLinkARM.dll V6.12j (DLL compiled Feb 15 2017 18:01:10)
Reading flash device list [C:\Program Files (x86)\SEGGER\JLink_V612j\ETC\JFlash\Flash.csv] ...
 - List of flash devices read successfully (451 Devices)
Reading MCU device list ...
 - List of MCU devices read successfully (6341 Devices)
Opening project file [C:\Program Files (x86)\SEGGER\JLink_V612j\Samples\JFlash\ProjectFiles\Freescale\111.jflash] ...
 - Project opened successfully
Connecting ...
 - Connecting via USB to J-Link device 0
 - Target interface speed: 1000 kHz (Auto)
 - VTarget = 2.805V
 - ERROR: Failed to connect.
Could not establish a connection to target.