They might not have a PlayStation Network account, so offering steps to set one up would be helpful. Also, checking if their device is compatible with the game could be useful. Maybe they have a PSP with firmware that allows downloading from the store.
First, I need to consider the legality of distributing game ISOs. Since the user is asking for a "ver gratis" (see for free), they might not be aware that downloading copyrighted software without purchasing it is illegal. I should address that in a respectful way. god of war chains of olympus psp iso espa%C3%B1ol ver gratis
Also, note that newer versions like the HD Collection might not be available on their region. Suggest checking the PlayStation Store for availability. If they already own the game but just need the ISO, perhaps explain that creating a backup is a grey area, but again, staying within legal boundaries. They might not have a PlayStation Network account,