Samsung galaxy ACE GT-S5830i will not unlock

Morning all

I have a Samsung galaxy ACE GT-S5830i I am trying to unlock. The pc is seeing the phone fine and all the drivers loading up. I set the developer mode setting. But the phone will not unlock. I can read phone info but that is all. If I use Chimera it say it cannot root the phone. If I use FG_sam it fined he phone then give me a read error or phone not answering.