Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: changing to region code 0 How do I change to region code 0?
Document: Press the "up" arrow and "Code 1" becomes "Code 0". All Region or Region Free.e. Press "Setup" to exit.5. Turn off and then turn back on.
I bought this dvd player because i wanted to play a couple of Region 2 and 4 dvds... it worked and played beautifully after i put in the code and changed Region 1 to Region 0... here's the hack... 1)Go to preference page in the set-up menu. 2)enter "138931" 3)go up or down to set region to code 0... and that's it, i got a univeral dvd player.
Then it would take up to FIVE resets to get it to work, and even the startup itself was getting wonky.Here's the key -- even though the version of the player's software was listed as being the latest available on the website, I went through the process of "updating" it anyway (dead easy), figuring it would at least undo the region code change that screwed it up.The big surprise? It fixed EVERYTHING.
Press the "up" arrow and "Code 1" becomes "Code 0". All Region or Region Free.e. Press "Setup" to exit.5. Turn off and then back on to remove green bar along the top of the screenThis is basically a copy of the previous hack..Enjoy
This DVD player is fantastic for the price. It has a ton of features and options that make it a great player.As many people have said, it comes factory preset to Region 1. There is a simple code you have to enter to change that, and it is not hard at all. A simple Google search will give you the answer you are searching for.The up-scaling looks great. I have this player set up in my room with a 24 inch 1080p HDTV.
THEN enter this 6-digit code: "138931"Immediately the screen will show "Region Code 1".d. Press the "up" arrow and "Code 1" becomes "Code 0". All Region or Region Free.e. Press "Setup" to exit.5. Turn off and then back on to remove green bar along the top of the screen.This is a great player regardless of price.
This sweet little device has the alluring quality of being upgradeable to a Region Free DVD player, merely by keying in the code 138931, using the remote keyboard that comes with the device. Be forewarned you will not see the 138931 numbers replicated anywhere, either on the screen or on the remote keyboard. You proceed completely on faith that your numbers are being recorded into DVD memory. The only indication that you have been successful at performing this task is when you see the Region 0 readout on the DVD Led panel.
Picture quality is excellent, very crisp with HDMI. Compared with other Philips DVD players this one is slower to power on and change tracks. The motor is surprisingly loud when loading a disc or changing tracks. While the Philips remotes are generally very well designed and the button layout is superb, this remote feels cheaper than other models.
Has the capabilities of changing the regions from playing dvd's just for the US, to any region dvd. Now I can buy dvd from England and Canada and not have to worry about playing them.
Important: Unlock Code (Zone 0), models of Philips DVP 3560 / F7 Zone 1 USA and Canada, and the DVP 3560, are exactly the same to unlock the following steps: press the remote control and then SET-UP down the cursor down to "preferences"and immediately select the following numbers:Precione 138931 then menu button and immediately will be in area 0 for all regions.
Answer: from another comment above (this works; I used this good advice):1. (No DVD in the tray. The tray closed. The unit and TV on.)2. Press "Setup" on the remote.3. Press the "down" arrow repeatedly until the top heading shows "Preferences." (Three presses, by my count.)a. Then press "OK" and Audio will be highlighted.b. Press the "down" arrow and the next category "Subtitles" will be highlighted.c. THEN enter this 6-digit code:     "138931" Immediately the screen will show "Region Code 1".d. Press the "up" arrow and "Code 1" becomes "Code 0". All Region or Region Free.e. Press "Setup" to exit. You can redo the process to check your work if you want to.