@kuin00, you can finally make your own bubbles for the PSVita without a PS3, you will still need TN-V or VHBL on your PSvita to make these bubbles.
I have not had chance to test this out myself but thought you all would like to give it a try, so have fun.”Note: these bubbles will not run as its just cosmetics”.
GAME> MUSIC > （The GAME folder hide)
SAVEDATA> GAME> GAME
same folder as the Registered ID
put PBOOT.PBP in the same location as the EBOOT.PBP