http://wololo.net/2016/06/21/ps-vita-cartridge-dumps-available-warez-sites-cobra-blackfin/
Turns out it was from the same team, saying they're "incomplete" and "Strange" they also say that "The BlackFin dumps don't seem to be 100% complete."
Odd that it's coming from the same team.
I had the same problem, turns out you need to press Square and it'll bring up a mouse cursor. Felt dumb after realizing, but I swear I already tried all the buttons...
Well, all of the games I tried don't work off the bat (Love Live, Moe Chronicles, HDN Rebirth) and I can't get the damn email to work to dump my app.db... Welp, I guess I'll wait for a comprehensive guide, then.
Shame to hear about the emunand on n3ds... I guess I can use my old 3dsxl when a game requiring higher firm gets released... Hopefully it'll be fixed by then, though.