Yeah I know that, but the game is not modded in anyway! No free cars, no unicorns, no speed mods. NOTHING! 
Relax it says that when you inject a different file then the original.
Happens all the time with WaW
Look at 3.
Then you injected it wrong, use WX360
Ahhh s***. Waited a disc yay!
Were can I get the latest version from?
When I open my iso I get this: 
Well i cant use any of my XDG3ās in it. It gives me the same error.
sorry.
Loos like XDG3āS dont work.
Can you do this to like, my gamesave lets say put the Bugatti Veyron Mini Cooper, then save on my gamesave, resend to me, and itāll work on my xbox retail with the gamesaveā¦?
What were you suing before? I use the new version of xbox backup creator. Try that.
I cant see why notā¦
I was planning on doing free unicorn save/gift thing but I canāt because it wont work for me! 
Thatās what I used, but something went wrongā¦ 
I dunno, read what this guy said. https://www.wemod.com/forum/80-xbox-360-modding-discussion/94624-forza-motorsport-4-iso-jtag-mods-beta-v1.html#post889329
It works but it freezes your game so ;./
Very nice thanks 
Alright I have been using this a bit and I have any information you guys want to know if you are curious.
First off, I would like to thank Flippo for finding this. These are awesome!
Now as far as gifting goes, you will get banned pretty quickly if you gift unicorns. That isnāt a good idea. Also, you CAN NOT gift modded cars. The file that is modded on the iso needs to be modded when you race it. I used my bought Forza disc with the modded Datsun and it froze.
I also do not know how this works online, It should work but there is a problemā¦
After ~5 minutes of sitting anywhere with the menu music, the game will āfreezeā you can still navigate normally but the audio is frozen so it repeats the same .2 seconds of music forever. You can not enter any races when you are in this state. You have to dashboard and try again.
So hypothetically, if you can join an online race and start the game quickly enough, you can use these online.
Anyways, about the mods, I generally do drag races online and thatās what I tune for. These mods are not ideal for drags at all. The cars have impossibly good handling so any small touch of the stick will send you into the wall of the drag track so you are stuck sliding down the track on your door at 160MPH. Funny, but annoying when you are actually trying to win.
I hope we can see more from these guys. If they release more, someone PLEASE post them. I would appreciate it
Donāt worry, I am watching the original thread, because they are still giving updates about whatās coming. So far they found out you can edit the cars in 3DS MAX/C4D and have words in the smoke trail when your drifting.
EDIT: Guys make sure the file you inject is EXACTLY 6.19mb, if it isnāt redownload it and try again. Thatās why it isnāt working right for some people.
Wow, i think once those come out iāll download the game. Thatās awesome being able to edit cars in C4D and the smoke mod sounds awesome too. any ETA?
Nope, no ETA was given, but they should be out really soon!
You should download it now forza4 is a great game I actually bought a retail copy and I bought the season pass.
These mods look great man.
I just want to make sure that I read this correctlyā¦if I were to send my profile and gamesave, and have you inject the datsun and mini, when I got my gamesave back it wouldnt work properly? Also, the modded files are ONLY for download on flashed and Jtagd 360ās correct? Thanks!!!
Nope. Your game would freeze when you try to use it. You might be able to sell it for a lot since itās modded but on the auction house, you will probably get banned lol
Yes.
Flippo, do you know how they do it? I am VERY interested in looking into it
Whatās the 2 Discs for? Is it like Forza 3, and just extra DLC?