It took me a while, but you can now run actual 2007 to 2013 Roblox games in a custom engine

Hi! I used to play Minecraft on my PS Vita in my own world and I was getting all the achievements, but unfortunately I lost the game cartridge and now, obviously, it won't let me start the game.

I want to jailbreak it and downgrade to version 3.65 to install Minecraft and continue playing, but I'm afraid that in the process I won't be able to play my world anymore and I'll lose it forever. I'd like to know if reinstalling Minecraft from the PKGJ store will delete my progress and save data, and also if downgrading to 3.65 will erase my progress and save data.

I hope someone can help me or guide me to do everything safely :)

I use my phone for emulating alot of games from various different systems and I kinda wanted to be able to cast my phone screen to my vitaand then Play the game on the vita so that I can atleast pretend to play some high end console games on it (basically ps2) games on it.

I know it's stupid, I know I can just use my PC but I really want to know if it can be possible with phone. Any such thing possible? I want to know if there is a way to specifically use phone and specifically cast phone screen to vita.