nRF52 download by board jlink(Interface MCU)

I got an nRF52 DK and I was unable to recognize the JLINK driver by connecting to my computer via USB. My SEGGER version is 6.44E and my own jlinkV9 is normal. How can I solve it? 2. I enter the Interface MCU into the bootloader mode, how to update the Jlink BIN file