NRF dongle not booting up after flashing

[skelly7769]

The firmware that i flashed onto it worked on others dongles but mine doesnt boot up or windows doesnt detect it or play the usb sound

[Amanda Hsieh]

Hi, 

Are you using this nRF52840 Dongle? or provide by other vendors? 

How do you program the dongle? and What firmware are you flashing?

This tutorial  nRF52840 Dongle Programming Tutorial might help. 

Regards,
Amanda H.

[skelly7769]

I'm using the normal dongle nrf52840 trying to flash it through programmer as a steamvr dongle it replaces the bootloader with nothing I believe the issue is that I need bootloader.hex

[Amanda Hsieh]

Check the "Revert to production bootloader" section in that tutorial.

-Amanda H. 

[skelly7769]

The  firmware im flashing does not have the bootloader region and when i flash it then the log is

21:12:54.620

Using nrf-device-lib-js version: 0.5.0

21:12:54.620

Using nrf-device-lib version: 0.13.11

21:12:54.620

Using nrfjprog DLL version: 10.18.2

21:12:54.621

Using JLink version: JLink_V7.66a

21:13:22.436

Parsing HEX file: C:\Users\a\Downloads\NRF (1)\temp_app_stamped_p.hex

21:13:22.451

File was last modified at 7/20/2021, 11:28:27 PM

21:13:22.568

Update files regions according to Application core

21:13:22.568

Parse memory regions for file

21:13:22.569

SoftDevice detected, id 0xB6 (S140 v6.1.1)

21:13:29.016

Parsing HEX file: C:\Users\a\Desktop\graviton_bootloader_mbr_v1.0.1-[nRF5_SDK_15.0.1-1.alpha_f76d012].hex

21:13:29.016

File was last modified at 5/22/2018, 8:20:20 AM

21:13:29.045

Update files regions according to Application core

21:13:29.045

Parse memory regions for file

21:13:29.045

SoftDevice detected, id 0xB6 (S140 v6.1.1)

21:13:32.792

Update files regions according to Application core

21:13:32.792

Parse memory regions for file

21:13:34.805

Parsing HEX file: C:\Users\a\Desktop\graviton_bootloader_mbr_v1.0.1-[nRF5_SDK_15.0.1-1.alpha_f76d012].hex

21:13:34.805

File was last modified at 5/22/2018, 8:20:20 AM

21:13:34.825

Update files regions according to Application core

21:13:34.825

Parse memory regions for file

21:13:38.620

Parsing HEX file: C:\Users\a\Desktop\temp_app_stamped_p.hex

21:13:38.620

File was last modified at 7/20/2021, 11:28:27 PM

21:13:38.717

Update files regions according to Application core

21:13:38.717

Parse memory regions for file

21:13:38.717

SoftDevice detected, id 0xB6 (S140 v6.1.1)

21:13:51.677

Update files regions according to Application core

21:13:51.677

Parse memory regions for file

21:13:51.677

SoftDevice detected, id 0xB6 (S140 v6.1.1)

21:13:55.288

Using @nordicsemiconductor/nrf-device-lib-js to communicate with target via USB SDFU protocol

21:13:56.082

Update files regions according to Application core

21:13:56.082

Parse memory regions for file

21:13:56.082

SoftDevice detected, id 0xB6 (S140 v6.1.1)

21:13:59.202

Target device closed

21:15:45.122

Using @nordicsemiconductor/nrf-device-lib-js to communicate with target via USB SDFU protocol

21:15:45.898

Update files regions according to Application core

21:15:45.898

Parse memory regions for file

21:15:45.898

SoftDevice detected, id 0xB6 (S140 v6.1.1)

21:16:06.784

Does not need to be reloaded: C:\Users\a\Desktop\temp_app_stamped_p.hex

21:16:06.785

SdReq for SoftDevice is set as 0x00.

21:16:06.786

Hash is generated by SHA256

21:16:06.787

Hash is generated by SHA256

21:16:06.790

Performing DFU. This may take a few seconds

21:16:06.833

Opening serial port for SDFU programming: 0%

21:16:07.260

Opening serial port for SDFU programming: 100%

21:16:07.382

Uploading image through SDFU: 0%

21:16:07.678

Uploading image through SDFU: 100%

21:16:16.507

Waiting for serial port to be attached: 0%

21:16:16.536

Target device closed

21:16:18.066

Device was attached: 100%

21:16:18.066

Opening serial port for SDFU programming: 0%

21:16:18.480

Opening serial port for SDFU programming: 100%

21:16:18.536

Uploading image through SDFU: 0%

21:16:18.820

Uploading image through SDFU: 100%

21:16:28.328

All dfu images have been written to the target device

21:16:31.329

Failed to reconnect to device: Error: Timeout while waiting for device F6ACAB4B0AFE to be attached and enumerated

[Amanda Hsieh]

Hi, 

The updated image seems only have SD+APP. If you want to update the bootloader, you can use the Open bootloader example project from the SDK. 

-Amanda H.

[skelly7769]

How can i download it?

[Amanda Hsieh]

It's the same as you did for the image with SD+APP.