Do these actually decode?

[Crashy2]

I bought both of these from aliexpress, and I can't get either of them to give 5.1.
I've tried all types of input, and there's either no output to the surrounds, or the surrounds replicate the fronts. The centre has non dialog, and the L/R contain dialog.
Has anyone got these to decode?

 

[Markw4]

A lot of those HDMI boxes/boards only output something like 16/48 PCM stereo of otherwise encrypted audio streams. The SRC to 16/48 may be done in the source device and may not be of the best quality.