How to remove Flags when advertising as Connectable undirected (ADV_IND)

Hi,

how to prevent ROM automatically adding Flags to the advertisement packet when advertising as connectable ("The Flags data type are added by the ROM")?

I am aware that this is not by the specs (there is similar questionHow to remove flags from advertisement packet但这是佛r Non-connectable advertising), however there must be some way to have full control over the advertisement packet payload - which is possible using HCI.

Thank you,
Bojan