You need to overwrite eboot using Filezila
Connect to ps3 + pc via PRODGTARGET MANAGER
Then CONNECT USING CCAPI2.50
Once you connect you should be able to attach tool no problem. Just make sure that your at the game menu when you try and attach
**edit, make sure RebugToolbox is open when you tru and connect via Filezila (i couldnt connect for hours figuring that out lol....thank @AMCMODDING Lol**