Erm, I hope my friend doesn't get mad, because I accidentally took his F10!
What I did was simply delete game data to version 1.0 and I owned the car, I was only trying to reinstall the game
What this does:
This glitch allows you to permanently "borrow a persons car and own it.
How to do this:
1. First, borrow a friends car. Delete GT5 game data, it's the first folder in the Game tab in the XMB
2. Start GT5, refuse to download the patches
3. You should own the borrowed car BUT select a different car in your garage
4. Install patches and enjoy!
Pros of this glitch:
1. The original owner keeps the car and you get a copy of it
2. There's no types of trade caps
Cons of this glitch:
1. Time consuming
2. DELETING GAME DATA does not REMOVE ANY DLC
~~~~~~~~~~~~~~
This works with ANY car
FAQ:
Q. Does removing the game data affect game progress?
A. No
Q. What does the game data contain?
A. Certain DLC's, tracks, patches, cars, pretty much the entire game except your save data
Q. Does this work with DLC?
A. No, DLC cannot be borrowed
Q. How much time can this take?
A. The final update process can take anywhere from 30-60 minutes, in total about 1 hour per car
The average delete time for game data is about 5 minutes
**UPDATE**As of the 24th of August 2012, the total patch download time may take up to 3-5 hours depending on your internet connection. The use of this glitch is no longer recommended unless you REALLY WANT a car.
Q. How many times can I do this?
A. As much as you want until your fingers hurt
Q. Can you borrow more then one car at once?
A. No, you can only borrow one car at a time
Q. Should I re install the game afterwards?
A. No, it just adds more time if you want to glitch again
Q. Will I lose my data?
A. Back it up first
You will NOT lose your pictures and replays if you do this...
Go to your replays and pictures in the game.
Press TRIANGLE on each one. [Pictures you can do all at once, not sure about replays.]
Then press 'Export to Save Data' or 'Export to 'Export to XMB Photo Menu'
Then your replays and pictures are their own file on your PS3.
You can leave them there or back them up.
After you are done with this glitch, when you go back into the photo and replay section, there is something in there that you press and it will bring your stuff back into the game.
Thanks to teecro for the following guide-
Best of all, it's free! No fees at all.