MH Oldschool

Hi everyone, I'd like to ask a question about something.
Well, I'm playing MH3U on Cemu on my PC, and I recently bought a second-hand 2DS.

In my Cemu save, I'm right at the end of the Moga Village quests. And I really want to transfer my Cemu save to the 2DS.

Because I don't want to farm Brachydios set (It took me 2 days to get the gem drop) and have to redo all the Moga Village requests.

And I'd like to use the 2DS to play because if I use the homebrew ''artic base'', I can connect my 2DS to Citra and use the Citra servers to play MH3U online via LAN.

and searching on google I found ( https://github.com/fadillzzz/3usavetools ) that promises to convert saves from cemu to 3ds or 3ds to cemu.

and I have a lot of doubts about whether this is really safe, because it's not even an app, it's a python code. and I would like a second opinion from someone who really understands these things and can tell me if it's safe or not.

I appreciate your help if possible

Being hosted on github and completely open-source (the code that runs is publicly visible to all and anything malicious would have to be really hidden to evade the public eye), there is near to no threat of this being malicious to your computer. Since it's not really an executable, and it's not running any scripts with elevated permissions, I'd say there's no real threat of it being malicious either. The scripts are also fairly short and running mostly mathematical operations and shifting bits around, so there is really not enough code to hide a virus in it or anything like that. The worst thing it could do is not work as a save converter and mangle your original save, so do keep a backup of that before trying to run the script on it.

As for the 3DS side, I imagine you'll need some kind of homebrew like Checkpoint to be able to import and use the save data, since I imagine it will spit out a 3DS emulator compatible file. This obviously implies that you've gone through the process of jailbreaking your 2DS to be able to execute custom code. I might be wrong, though - briefly looking over the code, I didn't see the exact file format in question.

From what I know, there was an official 3DS to WiiU application for the 3DS called "The Monster Hunter 3 Ultimate Data Transfer Program". I don't know if it works backwards or has an equivalent on WiiU hardware to go back, but you could always give it a look.