Mark followed a strict sequence to ensure nothing went wrong: How To Update Pioneer DJ CDJ-3000 Firmware

For custom installers (CI) utilizing the VSX-920 in complex automation systems (e.g., Control4 or Crestron), firmware could occasionally be pushed or managed via the RS-232C serial port. However, this was rare for consumer-level updates and typically reserved for calibration data restoration.

The Pioneer VSX‑920 is a mid-range AV receiver released in the early 2010s. Firmware updates for AV receivers typically fix bugs, improve stability, add format or network support, and sometimes update DSP/room-correction features. This article covers where to find firmware, how to update the VSX‑920 safely, what to watch for, rollback considerations, and troubleshooting.

The Pioneer VSX-920 is a mature, stable device. Unless you experience specific HDMI audio dropouts, leave the firmware alone. For most owners today, the best "update" is using it with optical/coaxial inputs for clean 5.1 audio from a modern TV.