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The native resolution of the screen the firmware is designed for (Full HD).
Once the blinking stops or the TV restarts, remove the USB drive. Important Considerations Panel Match
It appears to be a compressed archive file name: cv920e55_1920x1080_1g8g_magic_part3.rar
: Ensure your TV panel is actually 1920x1080. Flashing a 1080p firmware on a 720p (1366x768) panel can result in a "no display" or "distorted image" state. Remote Issues