A video description of the shortcut can be found here > CLICK
First...
Take your new character online and do a ranked Quick Match. You don't actually play the match, just wait for someone to enter the lobby and then leave. This will give you 40 XP's. If you already have free XP's, you can skip that step.
Alternately, you can play an Exhibition offline, instead of doing the Quick Match. Just set the difficulty to Very Easy, and set the match to 1 set, tiebreak. Do this if you don't want to lose you stats in the online World Tour.
Next - Remove the "TS3 update"...
To remove the "TS3 update" from your Xbox 360*:
• Go to the Xbox Dashboard, select the System Blade, and select Memory.
• Highlight the HD symbol and press Y.
• Highlight "Clear System Cache" and press A.
You will see a confirmation message to confirm system maintenance, proceed.
* Removing the update will also delete all of your clothing, racquets, etc. from your locker room. You may want to buy your new character's equipment before you remove the update.
To remove the "TS3 update" from your PS3:
• Go to the Game Data Utility > TS3 data.
• Push triangle, delete. This will not erase your players, that data is in save game utility.
• Disconnect from the internet. If you don't you will just re-download the update.
• It will take a couple of minutes to re-install on the HDD and you can create players again until you reconnect to the internet.
After you have removed the update...
Go to the Player Area > Player Evolution. Pick any skill - let's go with "forehand."
1. Highlight forehand and press A.**
2. Add the 40 XP's and press A again.
3. Press A one more time, and remove the 40 XP's you just added, but this time press B instead of A. The forehand will still have the points you added, and they will still be available to use again.
4. Repeat steps 1-3 until you have about 35,000 XP's.
Tip: To speed things up a bit, on step 3 do this: When you reach 100 on forehand, only remove points until it is at 89 (orange). This will give you about 4,000 points each time you do that step.
** For the PS3: A = X and B = O
When you go back online you will have to, again, install the TS3 update. You will need to remove the update each time you create a new character.