Android TV 12 preview builds for ADT-3 can’t be flashed, preventing developer access - 9to5Google

Frustratingly, though, a glitch is preventing developers from flashing Android 12 preview builds on ADT-3.

For example, the brand new Chromecast with Google TV ships with Android 10, and Android 11 was never actually shipped to any retail Android TV devices outside of Google’s own developer device.

That’s why it was such a surprise to see Android 12 made available for TVs so quickly, but it’s a great sign of the company’s commitment to the new Google TV platform.

Apparently, the most recent version of Android 11 available to ADT-3 breaks the ability to allow OEM unlocking on the device.

In theory, developers with an ADT-3 that is on an older version of Android or that already have an unlocked bootloader should be able to install the Android 12 previews, but we can’t verify that since, well, we can’t unlock the bootloader on our own ADT-3 unit.

Currently, the company’s suggestion for getting Android 12 on ADT-3 is to wait for Google to release the final version.

Android TV is a version of the Android platform which has been modified by Google to run on televisions with over 5,000 native applications