After flashing, immediately go to Settings → Backup & Reset → Factory reset . This cleans residual data from the previous OS on the userdata partition. Then, install a small fan (USB powered) on your box – Android 9.0 pushes the RK3128 harder, and heat is your enemy.

: Native support for HDR VP9 video and HEIF image compression, which is ideal for portable media players.

The firmware often includes native Miracast (WiFi Display) , making it a capable portable presentation tool or a "cast-to-TV" bridge for mobile games.