Un-do Arduino Bootloader Flash for nrf52832

[weberrr]

Hi,

Has anyone had success going from the Arduino bootloader back to J - link bootloader?

CONTEXT:
I purchased 5 nrf52832 modules, and followed the posted guide to burn the ""Bootloader DFU for Bluefruit nRF52"", enabling me to use Arduino library examples. I now wish to experiment with the Bluetooth mesh SDK, so I downloaded Segger Embedded, and am having troubles getting J-link to recognize the device on my USB. I am unable to burn the "J-Link for Bluefruit nRF52" I see available under bootloaders in Arduino back onto the board, getting the error message "ERROR: There is no debugger connected to the PC. Error while burning bootloader." Segger Embedded also does not detect the USB, "No emulators connected via USB".

DETAILS:
OS: Windows 7 Professional (x64)

Device: nrf52832 BluefruitFeather BLE chip

Softdevice: 0.2.11 SoftDevice s132 6.1.1

Current Bootloader Installed: Bootloader DFU for Bluefruit nRF52

Current Environment: Arduino

Desired Environment: Segger Embedded Studio for ARM

Attached:

How COM port is perceived by windows device manager...

Message when attempting to connect via Segger Embedded Studio

Thank you,

Ken

[tesc]

Hi,

I am afraid that we have limited knowledge about third party modules in Nordic tech support, and so only the community will be able to help. You will likely get more help if you go to the module vendor, which in this case has a community forum of their own.

Have you tried asking on the Adafruit customer support forums?

Regards,
Terje