Back when the Vita launched Sony promised to make most of the PSP’s back library available on Vita, however the company seems to be taking its sweet time about it.
From today Vita owners can now download Metal Gear Solid: Peace Walker on their handhelds. If you already own the PSP version then you will be able to download it for free. Sadly it’s only the PSP standard definition one and not the HD re-release.
As a quick note “Transfarring” will not work with the Vita version.