Flash and re-install the firmware

crwdns2935421:0crwdne2935421:0 crwdns2935423:0crwdne2935423:0

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crwdns2935419:0crwdne2935419:0

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Unplug your T-GT from USB

Unplug T-GT from USB port.
Keep it plugged-in to power.

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