Stiletto 2 Software Update – Version 2.0.5
  To improve performance and reflect changes in the SIRIUS lineup of channels, a software update for Stiletto 2 is available, which features new channel logos, wallpapers and audio channel IDs.

For technical issues pertaining to the iPhone and iPod touch Application:
An updated application has been submitted to Apple and it is currently pending Apple's approval. This updated application contains the following improvements: Fixes the "disappearing favorites issue" | Fixes the "downloading new content issue”" | Improves overall application speed and reliability.
  Automatic software update for most Sirius Dock & Play, In-vehicle and home radios
  SIRIUS is currently making some changes to enhance our broadcast network and support new services.

  FCC Notice
  Did you receive a notice from SIRIUS regarding a radio that exceeds the limits of FM transmission established by the FCC?
If so, please visit www.sirius.com/optimize or call 1-877-635-5130 for detailed instructions.
  Mandatory software updates for SIRIUS S50
  In order to maintain uninterrupted service, you must download and install the latest update to your S50.
  Install Videos New Vehicle Installation Videos
  Watch our new step-by-step video to learn how to properly install your SIRIUS Dock & Play or Portable radio in your vehicle.
  FM Channel Find the best FM Channel for your Area
 

SIRIUS FM Channel Finder searches a FCC-provided database of licensed FM broadcasters to determine the best FM frequencies to use in your car and around your home for your SIRIUS Satellite Radio.