Turn off the SC-85 using the front panel power button (not the remote). Unplug the power cord for 30 seconds. Plug it back in.
The Pioneer SC-85 remains a sonic beast—capable of driving difficult tower speakers with ease. A little digital maintenance ensures this analog masterpiece survives the streaming era. pioneer sc-85 firmware update
You must update via . Step-by-Step: The USB Method You will need a small (8GB or less) USB 2.0 drive formatted to FAT32 . Turn off the SC-85 using the front panel