xbox 360 wave 4 to wave 3

since i cant use the activate iso on tekken 6 for some reason. i found that on the internet you could use abgx360 to patch the game down to wave 3. so i followed the steps of the tutorial

that tutorial but when i get to the end it doesnt patch. i get an

Code:

cannot check splitvid due to invalid or uncertain PFI/Video

at the end and it wouldnt of patched anything. but i tried to use xbox 360 backup creator and it worked when i ran it through abgx360 but the game CRC was all messed up. so any ideas on how i could insert a video file and a pfi file through xbox 360 backup creator properly. and i tried using the patch that abgx360 gave on there site with no luck. any help would be appreciated. i heard that if i get tht error i would use PFF patcher but i have no idea what am doing with that because it requires a iso file and an PFF file and i only have an ISO file and PFI