Neither of these is the current release. The official, maintained SmartTube app is now on versions above 20.x . Searching for “617” or “740” suggests you are looking at an abandoned, unsupported fork.
Because this app is not hosted on the official Google Play Store or Amazon Appstore, you must enable sideloading:
Before trying complex solutions, ensure your TV’s date and time are set to "Automatic" or manually updated. Go to . Select Automatic and ensure the timezone is correct. 2. Install "Smart YouTube TV" (Third-Party Alternative) smart youtube tv 617 740 free
For users whose devices do not include Google Services or the official YouTube app—common with many Chinese Android TV boxes and older smart TV models—Smart YouTube TV offers a way to stream YouTube content that would otherwise be inaccessible.
You can still find older versions like 6.17.40 on the Internet Archive , though they may no longer function correctly due to changes in YouTube's API. Neither of these is the current release
Are you getting the error on the app or a third-party app?
SmartTube is the recommended choice for most users today, offering superior features and ongoing maintenance. However, the security breach affecting SmartTube in late 2025 has raised concerns. Because this app is not hosted on the
Functions perfectly on open-source Android boxes that do not have official Google integration.
Allows manual selection of video codecs (AV1, VP9), frame rate matching (AFR), and custom playback speeds.
This method is often preferred by power users for its reliability and ability to bypass certain device restrictions.