When I bought my PSP Go it came with a voucher for Rockband. Is there a way I can download it and not put it on my PSP Go (Therefore not having to update) and keep it for when the PSP Go is hacked and I can use it? Could I put it on a PSP 1000/2000 with the latest FW and then use Pandora's battery to re hack them, or does it need a PSP Go? Does this thing expire? What should I do with it?