Some users have reported that their TVs cannot jump directly from older versions to the latest Vizio OS without first manually installing 4.25.11 and subsequent versions like 4.60.27 .
Most Vizio TVs update automatically when powered off and connected to the internet. However, if yours is stuck, you can force the process: Method 1: Automatic Over-the-Air (OTA) Update vizio firmware 4.25.11
Turn on the TV, set it to an input with "No Signal," and insert the USB drive. Some users have reported that their TVs cannot
If your TV refuses to find 4.25.11 or newer versions automatically, you can perform a manual install: If your TV refuses to find 4
Follow the on-screen banner to begin the installation. The TV will reboot and show a progress bar. Common Issues & Troubleshooting Firmware Information - VIZIO Support
Choose and select Yes if a prompt appears. Method 2: Manual USB Update (If OTA Fails)
For many older Vizio models, version 4.25.11 acts as a vital stepping stone.