How to install the old version of the firmware?

[zappolo]

Hi,

How I can install the old previous version of the firmware?

I wat to send the digital audio output to both the S/PDIF and HDMI ports simultaneously and it seems that it is impossible with the new firmware relase.

best regards

[TonyPh12345]

http://wdc.custhelp.com/app/answers/detail/a_id/5800/

[zappolo]

many thanks