The "golden" update that finally fixed the VSX-934 was released in late 2021, with a minor stability patch in mid-2023. The primary version you need is (or greater).
second-hand or at a discount, it is now a highly capable, future-proofed 7.2 channel hub.
If your receiver was losing connection to Spotify Connect, Chromecast, or DTS Play-Fi, the firmware update addresses these network stability issues. pioneer vsx934 firmware update fixed
These codes indicate a network-related problem. -01 means a LAN cable was not found (or the Wi-Fi disconnected), and -10 points to a general network communication error. The solution is to check your physical network connections, restart your router and receiver, and try again.
Fixing instances where the receiver would fail to wake up from network standby mode. Correcting minor display text errors on the front panel. The "golden" update that finally fixed the VSX-934
If you are experiencing a "failed" update or your unit is locked in an update loop, users and experts suggest the following:
Improving the accuracy of the MCACC (Multi-Channel Acoustic Calibration System) microphone measurements during initial room setup. Why You Should Keep Your VSX-934 Updated If your receiver was losing connection to Spotify
Minor bug fixes resolve rare digital artifacting and color palette profile clipping when routing HDR10, HLG, and Dolby Vision signals through the auxiliary media ports. New Features Unlocked
Turn off the VSX-934 using the front panel power button. Insert the USB drive into the SERVICE PORT (not the standard USB input on the front; check the rear panel for the service port label).