How to use nRF54L15DK to programming the external nRF54L15 customer board

[Tom.Fu]

Hi Support Team

We want to use the J-Link of nRF54L15DK to program customer's nRF54L15 board. We follow the guideline of below link to connect the Pins of P19 of nRF54L15DK and customer's board like the table below. But it can not program normally. What the Pins of P19 are necessary for the customer's board and how to connect it? And how are these pins arranged on P19? Many thanks.

Program an external board

Pin number	nRF54L15DK	Customer's board
1	SWD0_VTG	VDD
2	SWD0_SWDIO	SWDIO
3	SWD0_SELECT	GND
4	SWD0_SWDCLK	SWDCLK
5	GND

[Edvin]

Those seems to be the ones you need, roughly. But you also need to connect GND to GND, and you need to power the external board. You can power it from the DK if you like, but SWD0_VTG doesn't power the external board. 

Best regards,

Edvin