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⚠️ : These controllers are older (USB 2.0, multi-LUN card readers / hubs). Flashing wrong firmware can brick the device. Proceed only if you have a backup or are certain. usbfirmwaretoolalcorau6366au6371 verified

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What exact and VID/PID values did your chip diagnostic tool show? usbfirmwaretoolalcorau6366au6371 verified