jphughan
5 Tungsten

RE: XPS 9550: Latest Thunderbolt firmware upgrade destroys HDMI port

You said you tried to update the Thunderbolt driver, but based on the error message and version number, it sounds like you tried to update the firmware.  in order to update Thunderbolt firmware, you have to have both the latest system BIOS and the latest Thunderbolt driver/software installed first.

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