: CV338H-T50 (a common Android-based universal smart TV board). Resolution : 1920x1080 (FHD). Backlight Current : Often preset to around 600mA .
To use this firmware to fix issues like "boot loop" or "no signal": : Format a USB drive (8GB or smaller) to FAT32 .
: Multi-part RAR archive ( part1.rar ). You must download all parts (e.g., part1, part2, etc.) into the same folder before extracting to avoid "corrupt archive" errors.
Keep holding until the update progress bar appears on the screen.