7.5.1 Stopping Advertisements
When starting advertisements using "A,<hex16>,<hex16>" with advertisement interval and total advertisement time parameters, "Y" command needs to be issued only once to stop advertising.
For default advertising on power-on or when starting advertisements using "A" without parameters, issuing the "Y" command stops the fast advertisements. After the fast advertisement timeout of 30 seconds the slow advertisement starts and the "Y" command should be issued to stop the slow advertisements. This is resolved in V1.28.2.
