Is it possible to modding NFS: Carbon - Own The City for PSP?

[moon]

Hello, I'm new here, I'm trying to make some kind of mod on NFS Carbon: Own The City for PSP and Zeebo, but I'm not sure how to start, I already extracted the .iso and made some modifications to some files, but whenever I tried to load the game again in PPSSPP it simply crashed (later I noticed that regardless of what I did, when I extracted the .iso and assembled it from new the game crashed even without modifying anything, probably i'm setting up .iso the wrong way, does anyone have a tip?)

Anyway, does anyone have any tips on how to get started, I would like help to modify the .big and .viv files, I tried to extract some files related to cars and artwork using Dragon UnPACKer but all he gave me was .o, .msh files and other types of files that I have no idea how to open.

https://i.imgur.com/h2a83OD.png
https://i.imgur.com/98kYlhn.png

Can anyone help me how to modify or at least open these files?

[Skyline Hunter]

I don't have a clue, but it sounds like you're making progress, nfsc otc on the psp still plays similarly to other versions of carbon, but I'm not sure if it uses all the same core files, or how to edit it, it's common for console (or handheld) versions of games to be vary different at they're core.

Keep up the good work @moon!
Hope you are successful.

[moon]

I don't have a clue, but it sounds like you're making progress, nfsc otc on the psp still plays similarly to other versions of carbon, but I'm not sure if it uses all the same core files, or how to edit it, it's common for console (or handheld) versions of games to be vary different at they're core.

Keep up the good work @moon!
Hope you are successful.

Unfortunately I didn't make that much progress.

But on the other hand I was able to extract the .big and .viv files without any problems using ea_big4.bms with QuickBMS.

And now I can view the 2D (textures, assets, etc.) .msh files through EA Graphics Manager, they recently added support for Zeebo and PSP version files.

https://reshax.com/topic/651-can-anyone-help-me-extract-the-files-from-nfs-carbon-own-the-city-from-zeebopsp-versions/#comment-2682

But I still haven't been able to export, import or modify the 3D model of cars, scenes, etc.