Follow the on-screen prompts; the unit will reboot once finished. Troubleshooting Tips
While the specific file may vary, the standard update process for this series involves these steps: DMH-Z5350BT - AV Receivers - Pioneer
Instead of hunting for a new every month, set up automatic or semi-automatic updates:
If the "Firmware Update" button is greyed out, ensure the handbrake is firmly engaged. :