https://www.greenbot.com/mi-tv-4-55-patchwall-3-0-ui-update-india/
Xiaomi Starts Rolling Out PatchWall 3.0 UI To Mi TV 4 55-inch
May 19, 2020 - Xiaomi is rolling out a new software updated to its first TV that was launched in India, the Mi TV 4 55-inch. The new firmware brings with it the PatchWall