Help needed for newbie PLEASE

Hi all
have been looking at the ariva 102e hd sat reciever. I need for Astra 2, i would like to unlock the full potential inc scrambled channels and understand this is poss the cheapest box around. I have read that i will have to upgrade firmware to emu? can do this, but after that are all the channels viewable or do i need something else, i am findoing it extremly difficult to find anyone thats willing to help with step by step guide. any help and point me in right direction would be appreciated, getting fed up of freesat channels, residence spain if that is needed?