Start the game. At the Main Menu, choose "New Game". Select a slot for your new profile. Enter TUNGHA as the profile name. This will create a new profile called "CHEAT" which will be saved on your hard drive. The profile has all of the game content unlocked!
This gives access to each of the 4 Chapters, the 4 Missions in each Chapter, all 16 Challenges, and all 7 Aircraft. Note that the previous unlocker released for this game only gave access to *3* Aircraft.