I am on the latest OFW but from what I understand, it will work on OFW as well.
general steps I've taken
1) Downloaded Brute Force
2) Got a save from a random game I played and set that as base template
3) Chopin save i'm trying to resign and/or cheat ==> I decrypt it under Brute Force
4) I click on PARAM.SFO at the bottom left and change ID / I've also tried doing it via Update Account ID (all)
4a) I've also tried adding cheats (and also without)
5) The list shows my ID do i update PFD
5a) I've also tried REBUILD on the right.
6) Insert it PS3, save is corrupted.