For Uncharted: Golden Abyss , a zRIF key is required to make the game appear "activated" on a hacked Vita, allowing the pkg file extracted from the PSN to be playable.
Enter and ZRIF .
Use an online converter or a command-line tool like rif2zrif to compress the file into the required text string. Playing Uncharted: Golden Abyss on Vita3K Emulator uncharted golden abyss zrif key