If your Fire Stick device still doesn't work correctly after clearing the cache in the OptiSigns app, you can perform a "Factory Reset" to clear all of the data that's stored on your device.
Note: The following process will return your device to its original factory state, which will delete all of your apps.
In this guide, we will walk you through end to end process to factory reset your Amazon Fire Stick device.
How to Factory Reset Your Fire Stick device
To reset your Fire Stick, go to Settings > My Fire TV > Reset to Factory Defaults. Then your device will be the original factory state.
1. From your Fire Stick homepage go to"Settings"
2. Scroll through and click "My Fire TV"
3. Then click "Reset to Factory Defaults"
4. Select "Reset"
5. It will take a few minutes to reset your device.
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