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If the picture appears mirrored or the colors are distorted after the update, you can adjust settings in the Service Menu: VS.T53U12.2 Universal LCD TV Main Board - Alibaba.com
While official manufacturer websites for these boards are often unavailable, firmware is widely hosted on technical community platforms: Download T53U12 1366x768 China USB Firmware rar
: Large repositories like lcd tv led tv smart tv software frequently host .rar files for this specific board series, including 1366x768 resolution files. If the picture appears mirrored or the colors