The is a popular universal Android smart board used in many Chinese-manufactured LED TVs. It is often paired with the LC390TUA panel, which typically features a 1366x768 (HD Ready) resolution.
Press and hold the on the TV panel (not the remote). The is a popular universal Android smart board
Extract the contents of the .rar file. You should see a file named allupgrade_338_2G_ref... or similar. Extract the contents of the
Finding the right firmware for a Smart TV mainboard can be a daunting task, especially when dealing with specific hardware like the CV338H-A42 . If you’ve encountered a "mirror image" display after a board replacement or a software crash, you likely need a specific tested file. This guide covers how to use the CV338H A42 1366x768 Panel LC390TUA Tested Mirror China.rar package to restore your TV. Understanding the Hardware Finding the right firmware for a Smart TV
On your remote, press Source + 2580 or Menu + 1147 .
If the only issue is the flipped image and the TV is otherwise working, you might not need to flash new firmware. Try entering the to fix it: