He headed over to the official Aiwa Support Page to grab the latest "OS" for his machine. The Process
Download and install the official Aiwa Fit app. Step 2: Remove the earbuds from the charging case. They should enter pairing mode automatically. Step 3: Open the app and navigate to Settings (usually a gear icon in the top right). Step 4: Tap on "Device Info" or "Firmware Version." Step 5: The app will check against the server. If a new version is available (e.g., v1.2.3 to v1.4.0), tap "Update Now." Step 6: Critical: Place both earbuds back into the case, but leave the case lid open (this maintains the Bluetooth link). Step 7: Do not touch the earbuds or close the lid for 5–10 minutes. Step 8: Once the progress bar hits 100%, the earbuds will automatically reboot. You will hear a chime like "Update successful." aiwa firmware update
If you're having trouble finding the information or if your device model is quite old, you might also try searching online forums or communities where users share experiences and solutions related to firmware updates for specific models. He headed over to the official Aiwa Support