This article describes the procedure to do an over-the-air update of your kien SUB.
Here is how to update a SUB on an iOS device:
Step 1. Plug your SUB to the power using the power supply
Step 2. Power on your SUB and wait until it's connected to your network
Step 3. Open the kien app
Step 4. On the SUB Leader tab, click on the SUB tile
Step 5. In the SUB settings, scroll down and click on 'Firmware'
Step 6. Click on the 'Update' button
Step 7. Your speaker is updating. It should take between 5 and 10 minutes
Step 8. The update was successful!