Xtrix plus apk now has updated to new version v1.2.66, it will update automatically with normally android tv box. If you use tv box android 10 version, you need to delete the old apk and reinstall new version with update link directly. Cause the new version apk may be crashed if automatic update itself.
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Here is new version apk download link, could open it on tv with Chrome to install directly. Or you can download apk file with USB flash disk, then connect it with tv box to install.
3 days free trial for xtrix plus code. Feel free to contact if any query.