Open the xbox backup creator (the one in the folder)
go to "image tools"tablet
choose in the right "inject"
click the "ap25 sector and load the iso of ff 13-2(yes the patched one with the topology data)
Then load the topology data which i give in folder

If all go well at the bottom of the program we will see:
Injecting Sector
Xbox Format Version = Xbox360 XGD3
AP25 Sector file injected at LBA sector 16608

You are ready to burn your image which now is compatible with your LT2!!!

Gredits goes to the greek hacker "kokonelos"