Tekken 6 Rebirth Mod 

Instructions:

Copy the cheat database file (st.dat) to your User Cheat "USRDIR" folder.
(Place the "st.dat" file in your PS3:/hdd0/game/CHET2000/USRDIR/)
Backup your original in case you have an important codes. Open UserCheat/CodeUnique and select Tekken 6 Rebirth Mod Option that will now appear. Load the game. 
It must be version 1.03.

Play as Azazel: 

At Character Select Screen Highlight Mokujin and press X to select his 2nd Costume. 

Play as Nancy:

At Character Select Screen Highlight Jack 6 and press X to select his 2nd Costume.

Note: Nancy requires Rounds for Victory to be set to 1 otherwise you will not be able to proceed to another opponent in Arcade Mode or any other mode than Campaign and Survival.

Bosses do work in Campaign Mode but on some Stages camera will be fixed on the floor...

NEW HEALTH SYSTEM:

Note do this before you apply "Boss Health Fix"

Right before round begins when announcer says "ROUND X" press the following combo key 
(both at once) to set "New Health System" for both Characters.

Select+Up Pad

then you can apply "Boss Health Fix".


Boss Health Fix:

Nancy needs Health Fix(prevents Nancy from destructing after the beginning of the round since the health set to Nancy Player is lower than normal)

Right before round begins when announcer says "ROUND X" press the following combo keys 
(both at once) to set Boss Health depending on your side or CPU boss Side.

If Boss Character is playing from Left :

For Nancy: Select+L1
For Azazel: Select+L2 

If Boss Character is playing from Right :

For Nancy: Select+R1
For Azazel: Select+R2


NOTE: If you have seth "New Health System" apply this for the enemy boss character using the key combo for the boss side to seth CPU Boss or Your Boss Character with the new health system, otherwise you will have advantage over the cpu boss (not recommended for challenge seeking players).