(.o) is a elf file generated when a game was compiled. for EA games contains a Model/Skeleton Bones/Box Collision and UV materials. after as some research on games source codes, including FIFA 2021, theres a lot stuff related to Render Ware engine, wich I believe it was used for EA PS2 GAMES, the most common Model format for render ware was (.dff), very popular on Grand Theft Auto Mods, because can include model and animations in one file, also in Monster inc, published on PS2 by EA, the models was in .dff format. and in the FIFA 2021 source code theres a "DFF Cleaner" cmd. 

OTools from DimitryFM can do the job as far as I know. No idea if DimitryFM has joined this forum yet.

Look OTools in bitbucket if DimitryFm is not here.

Edited December 31, 20232 yr by lorak