Cannot program new nRF54L15-DK board

Question

Hi all, 
 
 i just received 2 nRF54L15-DK boards. Both I am not able do program - I tried: 
 
 1. nRF Connect for Desktop 
 * I did not make any change on the board afre unpacking -> LO1 LED is flashing, LED0 is blinking (so board is powered) 
 * I used Quick Start and Blink example -> Flashing of board failed -> Log I attached in the ticket

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 5635.2025-01-02T11_54_22.273Z-log.txt 
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 2025-01-02T11:54:22.470Z INFO Initialising the bundled nrfutil device
2025-01-02T11:54:22.530Z DEBUG Started watching devices
2025-01-02T11:54:24.420Z INFO Using the bundled core version for nrfutil device: 7.13.0
2025-01-02T11:54:24.682Z INFO Using nrfutil-device version: 2.7.5
2025-01-02T11:54:24.682Z INFO Using nrf-device-lib version: 0.17.41
2025-01-02T11:54:24.682Z INFO Using nrfjprog DLL version: 10.24.2
2025-01-02T11:54:24.683Z INFO Using JLink version: JLink_V8.10l
2025-01-02T11:54:24.684Z INFO Your version of SEGGER J-Link (8.10l) is newer than the one this app was tested with (7.94i). The tested version is not required, and your J-Link version will most likely work fine. If you get issues related to J-Link with your devices, use the tested version.
2025-01-02T11:54:25.479Z DEBUG Selected device: nRF54L15 DK
2025-01-02T11:54:25.495Z DEBUG Changed step: Info
2025-01-02T11:54:28.478Z DEBUG Changed step: Rename
2025-01-02T11:54:42.027Z DEBUG Changed step: Program
2025-01-02T11:54:56.281Z ERROR NRFDLException(1): [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057769210))' was found
2025-01-02T11:54:56.282Z ERROR [ProbeLib] [2025-01-02 11:54:56.282798Z] Trace channel disconnected unexpectedly.
2025-01-02T11:55:28.161Z ERROR NRFDLException(1): [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057769210))' was found
2025-01-02T11:55:28.165Z ERROR [ProbeLib] [2025-01-02 11:55:28.160059Z] Trace channel disconnected unexpectedly.
2025-01-02T11:59:14.719Z DEBUG Changed step: Verify
2025-01-02T11:59:17.731Z INFO Opened port with options: {"path":"COM16","baudRate":115200}
2025-01-02T11:59:18.327Z ERROR NRFDLException(1): [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057769210))' was found
2025-01-02T11:59:18.328Z ERROR [ProbeLib] [2025-01-02 11:59:18.329221Z] Trace channel disconnected unexpectedly.
2025-01-02T11:59:18.509Z ERROR Failed with exit code 1.
One or more reset tasks failed:
 * 1057769210: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057769210))' was found, code: Generic.
Message: Failed to reset 1057769210, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057769210))' was found.
2025-01-02T11:59:18.515Z INFO Closed port: COM16
2025-01-02T11:59:25.376Z DEBUG Changed step: Evaluate
2025-01-02T11:59:27.557Z DEBUG Changed step: Learn
2025-01-02T11:59:28.344Z DEBUG Changed step: Develop
2025-01-02T11:59:30.434Z DEBUG Changed step: Apps
2025-01-02T11:59:31.384Z DEBUG Changed step: Finish

2. I tried nrfutil recover set of commands: 
 
 nrfutil device x-boot-mode-set --boot-mode safe --traits jlink nrfutil device erase --all --log-level trace --core Application --traits jlink nrfutil device erase --all --log-level trace --core Network --traits jlink nrfutil device x-boot-mode-set --boot-mode normal --traits jlink nrfutil device recover

with result: 
 C:\work>nrfutil device recover x Failed to recover 1057746230, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' w Error: One or more recover tasks failed: * 1057746230: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was found, code: Generic C:\work>nrfutil device x-boot-mode-set --boot-mode safe --traits jlink x Failed to set boot mode 1057746230, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(105774623 Error: One or more set boot mode tasks failed: * 1057746230: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was found, code: Generic C:\work>nrfutil device erase --all --log-level trace --core Application --traits jlink x Failed to erase 1057746230, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was Error: One or more erase tasks failed: * 1057746230: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was found, code: Generic C:\work>nrfutil device erase --all --log-level trace --core Network --traits jlink x Failed to erase 1057746230, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was Error: One or more erase tasks failed: * 1057746230: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was found, code: Generic C:\work>nrfutil device x-boot-mode-set --boot-mode normal --traits jlink x Failed to set boot mode 1057746230, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(105774623 Error: One or more set boot mode tasks failed: * 1057746230: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was found, code: Generic C:\work>nrfutil device recover x Failed to recover 1057746230, [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' w Error: One or more recover tasks failed: * 1057746230: [Probe] Emulator error: No emulator with connection info 'Usb(JLinkSerialNumber(1057746230))' was found, code: Generic

However, I have one other board (same nRF54) which I reciev month before, here i can program without issues:

Please advice what to do. 
 
 thx. 
 Peter