Hi pal! OBM = Open Backup Manager and it's a ps3 app, you don't need to run it on n900, you have to install it on the ps3 patched mode works with latest psfreedom and the "patcher" is built into OBM. To answer to your question, yes it'll work with the n900. and you have to activate the "patched mode" just before launching a game pressing the R2 trigger on the ps3 controller.