The latest firmware upgrade from Sony makes it impossible to transfer PS3 games to the PS Vita, but it’s not all bad news.
When it was first introduced on May 11, numerous users complained that they couldn’t transfer games from their PS3 to their PS Vita.
Console owners initially mistook it for a bug. According to ResetEra(opens in new tab) (via Siliconera(opens in new tab)), Sony published an official notice(opens in new tab) that was generally overlooked
Thankfully, this will not prevent you from downloading games directly to your PS3 or PS Vita. Players can also use the Content Manager Assistant