JLink on MacOS continuously disconnects and reconnects

[antekp]

Hello,

I am using nRF5340 DK, I was trying to connect it to my laptop MacBook Pro M2 but I continuously get this notifications about JLink disconnecting and reconnecting again, however I was able to flash a board. I know this is well known subject for MacOS, I tried some methods from other tickets like changing the JLink version, using Universal software, updating using brew, changing the cable and none of those helped. As I was reading about this problem on community I found a video of one of the users and my problem seems to be exactly like his: link to video. I work on MacOS Sequoia 15.5, using direct USB C - micro USB cable without any Hub. 

Hope to hear from you soon,

BR

Antek

[Nguyen Hoan Hoang]

Download the latest driver from Segger and update the jlink firmware to the latest

[antekp]

Thanks for the replay. I did all setup process all over again. Turned out that I did't install nRF Utils properly. For MacOS users, I recommend doing it this way: Installing nRF Util from the web (default). Then even though I installed everything correctly and had everything up to date I still had notifications problem. But this time disconnecting the flash drive in Disk Utility worked for me. Hope that helps for future users.

[Nguyen Hoan Hoang]

For me it was the jlink firmware.  It is also a known issue for jlink. The disconnect issue is gone after the firmware update.     

Use the JinkConfig.app to update the jlink firmware.