Mag 250 with Android on???

[FreeTVLanz]

I have bought a pair of Mag 250 but when I loaded them up they had a version of Android on.

I have tried to use the MENU button to access the BIOS but it doesn't take me there - in fact the boxes ignore any remote commands until Android loads.

How can I restore these boxes to their original firmware.

TIA

[uksat]

looks like fake

[FreeTVLanz]

looks like fake

Knowing the source, I think they were just idiots, but could be I suppose.