Skins, Voices and iGo Primo versions

With the help of holyhead have successfully returned my Mio Spirit 685 to working and useful condition. It noe runs iGo Primo version 8.5.11.155811 (according to the help – about)

I have been looking for some skins for the system and some other voices. The skins are because I don’t like the colours (or lack of them) of the buttons – so am hoping to find something that is maybe clearer to my eyes.

I notice that most of the skins I see are for Primo version 2.4 my version Primo 8.5.11.155811 seems to be v2.1.

I don’t feel that I ‘have’ to run the latest version or anything especially if my device is not up to running more up to date iGo Primo versions, but I would like to try out a few more skins and maybe a couple of other voices. So, to this end;

1) Can I run 2.4 and if I can, is it a good idea ?
2) If I can and it would work – how do I do that ?
3) Where can I download a bunch of skins and maybe voices ?

Any thoughts, help or info much appreciated.

Thanks very much for reading.