adpater cinema Display 30″ USB C to DVI flickering

Updated 24 hours ago in USB Type C
0 24 hours ago

i have this Produkt:

Club 3D USB Typ C zu Dual Link DVI-D Aktiver Adapter
i try to connect Studio Mac USB C with my Cinema Display 30″ from 2009
It seems to be working but after minutes it starts to flicker ing the screen and lost the signal. 
i read about firmware update. but how? and where to get the update?

 
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