I previously was evaluating the basic nRF5340 DK and installed the toolchain manager and the nRF Connect SDK v 1.9.1.
I now am looking at the Audio DK, and its documents and a note I read earlier said I had to install the SDK 1.9.99 dev1. This option does not appear on the list anymore.
How do I use the Toolchain Manager to install the software for the Audio DK?