By: Audio Archivist

The screen will go dark. The front VFD will show WRITING . Do not touch the receiver for 25 minutes. Do not unplug the USB. If the power goes out during a firmware write, the SC-85 becomes a very heavy paperweight. A Warning on "Bricking" The SC-85 has a dual BIOS system, so it is hard to fully brick. However, users have reported that after the USB update, the receiver gets stuck in a "Boot Loop."

Fix: Unplug the unit for 1 hour (capacitors need to drain). Then, hold Band (Tuner) + Zone 2 while plugging the power back in. This forces a restore from the secondary ROM. If your SC-85 is working perfectly? Leave it alone. Do not fix what isn't broken.

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 .