It seems you are looking for information on a hot (likely meaning recently released, popular, or in high demand) firmware update for the Pioneer SC-LX85 AV Receiver.
Here is the current status and what you need to know: pioneer sclx85 firmware update hot
A critical bug caused the receiver to lock up (no audio, frozen front panel) when switching between Dolby TrueHD and DTS-HD Master Audio tracks on certain Blu-ray discs (e.g., Inception, The Dark Knight). The firmware corrected the audio decoder’s state management. It seems you are looking for information on
Check your current version:
HOME MENU → System Setup → Other Setup → Firmware Update → Version InfoLast official firmware details:
Where to find the last real firmware (if still needed): Check your current version :
The most common complaint pre-update was the unit losing sync with a TV or projector when switching inputs. You would see a black screen or "snow" while the audio continued. The update rewrote the HDCP (High-bandwidth Digital Content Protection) negotiation logic. It specifically fixes the "5-second blackout" that occurs when waking a TV from standby.