[geston]

Please help, how to install XBMC onto TVPAD 3?

[nickr]

Might hel if you told us what the hell a tvpad 3 is, what hardware it has, whether it is capable of sideloading an .apk file etc etc.

[Prof Yaffle]

Assuming it's one of these:

http://en.itvpad.com/tvpadzt.html

I'd say that you can't. I've no idea what it runs, but it appears to be a dedicated media player and not a general-purpose computer of any description.

[Memphiz]

TVpad3 is a smart network set-top box, running on a highly customized OS

Well based on the screenshots they have stolen all icons from android. On a second thought i would tend to say it is running a "highly customized android" - and on a third thought i would say "just repainted GUI with android" .

Whatever - if it is android based you have to sideload our apk somehow. If this is possible depends on how "High" the customization of the vendor are.