Its a while back I posted in this Topic,  the secondhand cluster I bought is not installed,  I found the failure in my installed cluster, the voltage regulator BTS409L was making shortcut replaced it and it was working again.

Anyway I dismantled the other cluster and indeed the LCD display is partly blinded by a plastic sheet.  I think when dump the Flash Eprom from the wide LCD cluster and program it into the small view LCD it shall work, only the cluster then must be programmed to the car again.  ( component protection will be then active and only the speedo will work )

After the component protection is removed can dump again and then you can see where its changed in the Flash.
But i'm able now to learn components myself by VAS 5054A
Now must search for a widescreen (S8 - W12 ) dump.