Note: A firmware update typically takes between 5 to 20 minutes depending on your connection speed and method. Never power down or unplug the unit during this process, as it can brick the device. Troubleshooting a Failed Update

This is the biggest win. Prior to the update, eARC was a lottery. Post-update, the VSX-934 now locks onto eARC signals from Smart TV apps (Netflix, Disney+, Plex) within 2 seconds.

If the progress bar has not moved for over an hour, unplug the AC power cord, wait two minutes, plug it back in, and attempt the update again using a USB drive.

Press and hold the button on the front panel.

Before celebrating the solution, it’s important to understand the pain points. Users reporting to Pioneer and online communities described several consistent issues with the VSX-934 running older firmware (versions prior to R140-1222-2100-0011). The most common complaints included:

Download the firmware file named VSX934_Boot_Update_R140-1222-2200-0014.zip (or newer).

After this, re-run the MCACC calibration. This clears the NV-RAM cache that holds the old, buggy configuration data.