I have successfully rooted my ONN UHD Device. Here is everything that I had done after fallowing the
guide here:
Full walkthrough: Installing LineageOS on the Walmart onn. UHD streaming box - Obscured Narration
Download lineage-18.1-20220211-recovery-dopinder.img, and lineage-18.1-20220211-UNOFFICIAL-dopinder.zip
from:
LineageOS Downloads
See this YouTube video for further details:
After you have installed Lineage OS onto your ONN UHD Device, do the fallowing.
Go into sideload once more, then download Magisk APK from:
Release Magisk v24.1 · topjohnwu/Magisk
Change the extention to, .zip instead of .apk.
Then on the sideload Lineage screen push this code through adb.
adb sideload path-to-magisk-zip
Let Lineage Sideload do it's thing. Then Type in adb reboot.
After that, go into Settings, Apps, See All Apps.
Find Magisk and open it, it will prompt you to update. Do that.
After that? You should have root. ENJOY!!! Now you can do as I stated before about Tivimate.
My work is done :)