And it worked like a charm for me. I never even had this PS3 on PSN before, so created my own exdata folder, copied all edat to it.
Do you have more than one user on your PS3?
Yeah I did like this:
1. Put the files in the root of usb/external or Multiman's File Manager
2. Install UP0082-NPUB30225_00-LARACROFTGOL0000.pkg file via "Install Packages"
3. (Optional) If you wish to install UP0082-NPUB30225_00-DLC12345FIXED000.pkg, to add in game 5 DLC.
4. Copy files from folder "exdata" to/ dev_hdd0/home/00000001/exdata / (The folder '00000001' is your user profile id. If you have only one profile - that is the only folder you'll see under /home/ catalog.
In case you have multiple profiles, copy the *.edat file to the one that you will be playing the game from.
If the folder 'exdata' is not present that means you've never been logged to PSN - create it manually and put fixed files in it
I didn't have the exdata folder so I created it in MM. Just one user who never been on PSN so I only got the "00000001" folder.
Well since it's working for everyone else I guess I have to try again.