If your Pyro S upgrade fails and the device becomes bricked, you can try the following steps to restore it to normal operation.

1. Download the firmware version to force downgrade the Pyro S. Click to Download

2. Follow the Upgrade Tutorial to upgrade the Pyro S. Here is the Upgrade Tutorial.

3. Upgrade the Pyro S to the firmware version from the lowest version to the version you wanted. Here is the download address.