How to Factory Reset/Clear Pairing History of the Opera – Avantree Support

The OPERA set consists of 2 parts: The Transmitter, and the AS90C Headphones. Each needs to be reset separately.

Very Important: turn other devices' Bluetooth off before resetting to avoid interference.

Step 1: To Reset the Opera Transmitter.

Enter the transmitter into PAIRING mode –Slide the power button to Bluetooth icon for 2 seconds, LED indicator starts flashing RED & BLUE. Then Slide to Bluetooth icon again for 5 seconds, LED indicator is RED and BLUE LEDs are on SIMULTANEOUSLY for 5 seconds (may look PINK), then clear all paired history of the transmitter.

Step 2: To Reset the AS90C Headphones.

After turning on, Press and hold both “+” and “-“for 6 seconds until the RED and BLUE LEDs are on SIMULTANEOUSLY for 2 seconds (may look PINK), then release your hands. Now the pairing history of the headphones has been cleared. It will enter pairing mode automatically with the LED flashing RED and BLUE alternately.

Step 3: To pair the Transmitter and AS90C Headphones.

Wait for 5-10 sec, the transmitter and headphones will connect each other. You will see SOLID BLUE light both on transmitter and headphone and hear "connected" from headphone.

Step 4: To Lock the Transmitter and AS90C Headphones.

After the headphone is connected to the transmitter, hold the LOCK button on the transmitter for 10S until the RED and BLUE LEDs are on SIMULTANEOUSLY for 5 seconds (may look PINK) to LOCK them. Once connected, the LED indicator on both devices will turn SOLID BLUE.

Now they are locked, each time you turn on them, the transmitter will always auto reconnect to this headphones.

Related knowledge:

1. Bluetooth device normally auto-reconnects to its LAST paired / connected device. You might need to make sure the previous used device are Bluetooth-off to avoid interference.

2. It is important to Reset both Bluetooth sender and receiver. In case of cellphone / PC, you can turn off its Bluetooth function and turn it back on.

3. If still not working, you can email us (support@avantree.com). We will help you to fix it.