There are two ways to configure the ADV7611 and the ADV7511 on the EVAL-ADV7611EBZ:
* software driver enabled (software running on ARM CPU configures the ADV7611 and ADV7511)
* software driver disabled (using scripts that have been published for the EVAL-ADV7611EBZ)
I assume that you board has the SW driver (S3) disabled. Please post a photo of your board or the RS232 output to confirm.
-Matt