Wich nRF connect SDK version support ESL?

[Steven012]

hello,I am developing an ESL system using SDK v2.8, but I have encountered some issues，The chip I am using is the nRF5340；So，Which version is suitable for developing ELS system now?

[Turbo J]

Try a fresh start with NCS SDK 3.1.1 version and use one of the BTLE samples as a starting point.

The error message indicates that the net core was not flashed properly and thus the app core can't communicate. Radio is only accessible by the net core, but sysbuild should take care of that normally.