General custom rom for esoteric device?

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New member
Dec 23, 2021
Hi there,

I have an projector with a custom rom that came from china. It doesnt have any clear company or anything like that but I can find in some menus that it is an MStar device. MST142b
The android version is 6.0.

I cannot install any app that manages settings and things like that, and I want to be able to.
I keep getting notifications from youtube, and I cant even reach them through the system installed.

Any rom I might be able to install or anything else i can do?

I was able to install adb over eth, and then get a shell, and even run su and apparently get root, but then touch /root/test failed.

help! I dont trust the device....