Hi, I am following the user guide nRF51822 Evaluation Kit User Guide v1.2, the heart rate monitor demo, Scaning for available Bluetooth low energy devices: I started the the Master Control Panel 3.7.0, my Development Dongle was detected (COMnn-xxxxxxxxx) , then a dialog box asking about upgrading the firmware had the a title of: "J-Line j Firmware update" and contained the following text: "A new firmware version is available for the connected emulator. Do you want to update to the latest firmware version? Y click on Yes with this result:
New firmware: J-Link OB-SAM3U128 V1 compiled Aug 22 2014 17:25:44
Current firmware: J-Link OB-SAM3U128 V1 compiled Aug 27 2013 15:22:27
Starting bootloader...
Waiting for emulator to detach... OK after 377ms.
Waiting for emulator to attach... Timeout.
ERROR: Communication timeout. Emulator did not re-enumerate.
ERROR: Firmware update failed
After that the dongle is not working anymore: not detected for the Master Control Panel anymore, no led working...
I reinstalled J-Link v4.92 , checking: Install USB Driver for J-Link and Install USB Driver for J-Link with Virtual COM Port with the same result :-( Thanks in advance for any help