Still issue with 24/96 flac downsizing?

With the arrival of a new hifi amp with DAC, I download “the Slip” album from NIN in its 24/96 hires flac.

I transfer the album on my WD which have the 3.08.14 firmware.

The Hub is connectd with a good quality S/PDIF cable, unfortunately the amp displays “48”

So… to which firmware should I downgrade to have the “96” ?

Yes, it’s still downsampling the flac files. 

Thanks,

but is it only the flac ? Are the 24/96 wave also affected ?

Or more generally everything that comes out of the S/PDIF ?

Which firmware is good ?