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Copy the firmware file (often named all_upgrade_v553.bin or similar) directly to the root directory of the USB drive—do not place it inside a folder. 2. Update Procedure

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Installing the wrong firmware (e.g., Full HD software on an HD Ready panel) can result in a "black screen" or "inverted colors." Always backup your original dump using a programmer like the RT809H if possible. Copy the firmware file (often named all_upgrade_v553