After you update the firmware of WIDI products, please clear Bluetooth MIDI connection cache on your Android and reconnect WIDI again. This will solve some connection issues including lag, latency, disconnection etc.
1. Unpair previous WIDI connection on Bluetooth settings page.
2. Restart Bluetooth switch.
3. Reconnect your WIDI.
Check out our product information and latest updates on http://www.BluetoothMIDI.com