Controller won't boot

I just updated ML2 headset to 1.7.0. After completing the installation, I was instructed to update the controller. I plugged the controller into the headset for some time. Nothing really happened. Now the controller will not even turn on. It appears to be bricked. How can I recover the controller?

May I ask you to submit your issue to our Customer Care team please, or email them at They will be able to support you with any hardware issues.