• Format your USB drive to FAT32 on your Mac or Windows PC.
  • Go to Settings > My Fire TV > Enable Developer Options > Choose Developer Options > Enable ADB Debugging.
  • Open Settings > My Fire TV > Reset to Factory Defaults.

Basic Fixes

  • Avoid using largely sized USB drives: You need to avoid using USB drives that are larger than 128GB in size.
  • Check the USB Adapter: Amazon recommends using a USB 3.0 storage with the adapter for connecting to your Fire TV Stick 4K.
  • Update and restart Fire TV Stick 4K: Install the latest software version on your Fire TV Stick 4K model to get rid of bugs or glitches that may be causing the issue.

Fix 1: Format USB to FAT32

On Mac, connect your UBS > Open Disk Utility > Select your USB Drive name > Click on Erase .

format USB on Mac - 1

Fix 2: Disable USB Debugging

Step 1: Open Settings > My Fire TV > About .

Step 2: Select the model name of your Fire TV and then keep pressing the Select button on your remote to enable Developer Options .

Step 3: Go back and then select Developer Options .

developer options fire tv stick 4k - 2

Step 4: Select ADB Debugging to turn off the feature.

disable usb debugging on fire tv stick - 3

Fix 3: Reset Your Fire TV Stick 4K

Do note that following this solution will erase all apps and preferences from your Fire TV Stick 4K. You should follow this only if none of the solutions mentioned above have worked so far.

Open Settings > My Fire TV > Reset to Factory Defaults .

reset to factory defaults my fire tv 1 - 4

Tip: You can also read our post if your Fire TV Stick 4K is not playing 4K content .

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