A recently uncovered exploit grants system user privileges on Fire TV streamers and Fire tablets, letting you use custom launcher apps, access system files, get around Amazon’s app blacklist, and more. Once system user privileges are unlocked, you can use ADB to do things like set a new launcher app and disable automatic system updates. System user privileges aren’t as extensive as the privileges you’d get with root access, and they’ll be lost when your device restarts. The initial XDA thread outlining this system user access trick was published on September 12, so this method could be patched at any time. If you’re eager to make some unsanctioned changes to your Fire TV or tablet, you’d better act quick.