RE: Dell Wireless 1830 Bluetooth Driver Update
The Windows 10 Anniversary Update was compiled by Microsoft, not Dell. We have no way of knowing what drivers they included or why.
When I go to the Dell XPS 15 9550 driver page for Windows 10, I do not see a Dell Wireless 1830 update dated 12/22/16.
I find the following =
Dell Wireless 1830 Bluetooth Application
Version 184.108.40.2060, A01
Release date 10/14/15
Older versions =