Rev. C ADRV9009-SOM on Rev. B carrier not booting


I have a brand new Rev. C ADRV9009-ZU11EG SOM board I am trying to bring up using default files (downloaded the HW Rev.B files on the Quick Start guide). I am using a Rev. B carrier board. I have the boot switches as shown in the Quick Start guide for the Rev. B carrier board.

The system turns on (PG_ALL and PG_SOM LEDs light up), but hangs on the first stage boot loader. After ~1-2 minutes, the PS_ERR_OUT LED turns on. I have rebuilt the SD card in case it was corrupted, but same result. I also tried using the HW Rev.B files with the same result. I have booted off of both the carrier SD card and the SOM microSD card with the same result.

Any ideas what could be the cause of this?