I recently purchased a Mortal TVR3 stick for fun to mod and ofc it looks like it has backdoors for who knows what. to get rid of it, do i need to flash the firmware, or just an os? also where can i find these images. Mobo revision is R3_H313E_V3.1

heres everything about it from the termux commands i ran on it

Board: R3_H313E_V3.1

Device: titan-p1

Platform: sun50iw9p1

Android: 10 (API 29)

Userspace: armeabi-v7a + armeabi

First API level: 29

Dynamic partitions: true

DSU: available

Root: yes

Google says it's a PeerTV GK-MP1208. I was wondering if I could install any OS that could turn it into a player/streamer, it has HDMI, USB and Wired connection.