Hi Everyone, we have identified the cause of this behavior, and have a solution available to you. You will need to perform a firmware update on the K100 AIR with some specific steps to regain full functionality. The link below will provide you full details on the steps, as well as the necessary files that need to be installed:
https://help.corsair.com/hc/en-us/articles/14066443517709
If you continue to run into any issues, please submit a support ticket through the support portal, and a Technical Support Agent will be able to assist you.
https://support.corsair.com/
Corsair Nick's post in K100 RGB AIR wireless slipstrem and bluetooth not working was marked as the answer