Place your PS3's exported backup (found at X:\PS3\EXPORT\BACKUP\ ) into the \backup\ folder of TrueAncestor. Open retailer.exe : Select your backup folder (Option 1). Choose to add your game (Option 3).
The tool will automatically download necessary updates and create a new folder compatible with OFW. Note: Not all games are compatible with this method. How to Inject PS3 games on OFW 4.81/4.88
: Created via Settings > System Settings > Backup Utility . Step 1: Prepare Your Game Files How to Inject PS3 games on OFW 4.81/4.88
How to Inject PS3 Games on Official Firmware (OFW) 4.81–4.88 How to Inject PS3 games on OFW 4.81/4.88
(with enough space for your games).