is there any software or firmware updates and if so how does one go about getting it and also how does one go about installing it tks also I have put a new sat dish (sky) BUT no skybox and connected up to unit, I can receive some free sat cannels but others - regionl eg BBC wales, Ch 5, I can see get hold off it says NO signal? Im confused ?? my unit is in west wales s is it something to do with post code setting which fressat automatically priorities certain channels.