Inquiry Regarding PHY Configuration

[giun.kim]

The advertising PHY is set to 1M; is it fixed? If so, I'd like to understand the reason by reviewing the relevant technical documentation. In the example, it is set to AUTO, but when typically using 2M, what sequence is followed?

[Sigurd]

Hi!

When advertising on primary advertising channels, 2M is not permitted. Novelbits have a nice guide on this here:

https://novelbits.io/bluetooth-low-energy-advertisements-part-1/