Model: FPT Play Box+ 2019

Before the incidence:

1. My TV Box got too many ads, and it's slowing down everything, so I decide to do something about it.
2. Got on YouTube and seen this video .
3. Follow the instruction and uninstall the following packages .
4. Restart the TV Box.

Current situation:

1. Turn on the TV Box, Android loading screen came in first and then blank screen.
2. Try searching for method but to a dead end.

Any lead or good soul would help me gone through this incidence. Thanks in advance!