BRAND GIBCO UHD 4K ANDROID SMART LED TV MAIN BOARD  TP.MS638.PC821-1G-8G RESOLUTION 3840*2160 4K LOGO AND REMOTE ORIGNAL GIBCO WORKING RENAME FILE  allupgrade_msd638_8G_ref36.bin  TO  allupgrade_msd638_8G_sos.bin 50” SMART TV USB UPDATABLE FIRMWARE UPDATE Copy the bin file into USB and press and hold power button And plug in main power Green light will start flashing

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