[Help Still Needed] Extract, build a packer .csa files

[teia]

its possible to get files when the game is updating, from the Data folder (mostly .pmt, .pte and .pme files, but there's also a folder with .scene and .bank files) still not possible to open them though. cc creations said they're "using a hex editor to fiddle with the files" but as someone who knows jack shit about computers, this doesn't tell me much