[PS Vita] Vous voulez avoir access au jeu japonais de la PS Vita même si vous ne comprenez pas le japonais? c'est possible.

Do you have a PlayStation Vita and a love of Japanese games, but feel
the games you want to play take too long to get localized or—worse
yet—will never leave Japan? Well, there is good news for you: The Vita
is region free and can play any game from any region. However,
there is also some bad news. It isn't as simple as logging into a
Japanese PSN account and downloading the games you want. If you want to
download from the Japanese PSN instead of importing a physical copy you
will have to reset your Vita to the Japanese region first. But don't
fret! It's not that difficult to do. And we are here for you with the information you need to play Japanese games on your Vita, no matter the region you live in.

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Part 1 – Preparation

Things you will need:
*A Vita
*A Vita Memory Card
*A wireless internet connection
*The Vita's USB/charging cable
Step 1: Get a Japanese PSN Account
In order to play Japanese games on your non-Japanese Vita, you will
need a Japanese PlayStation Network account. If you don't already have
one, they are free and you can sign up for one via a PS3 by following our handy guide (voir le liens du forum ici ).
Step 2: Backup your Vita
[*Note: Skip this section if you have a second Vita memory card]
On the Vita, both the console itself and its memory card are separately
tied to your PSN account. Therefore, in order to play Japanese games,
you will need to restore the Vita console to factory default and either
a) format your memory card—thus deleting everything on it—or b) buy a
second memory card and use one for each region.
For the sake of
this guide let's assume you have only one memory card. So unless you are
okay with losing all your saved games, you will want to backup your
Vita (console and memory card) to your PC. This way, when you are done
playing Japanese games, you can reset the system to its original PSN
account and settings and restore all your files back to what you have
now.
To backup your Vita, download and install the Content Manager Assistant from Sony's official website.
After it is installed, follow Sony's official guide to get all your data backed up safe and sound.
[*Note:
In order to use the Content Manager Assistant to backup your data, your
Vita will need to have the most current firmware. Instructions on how
to update your firmware via PC are also available on Sony's website.]
Part 2 – Changing Your Vita Region Settings to Japan

Step 1:
The first thing you need to do is remove the Vita's memory card. To do
this, turn off your Vita and flip open the covering on its bottom right
hand side. Then push in on the card to pop it out (counterintuitive, I
know). Now set it aside. (But keep it close; we'll be putting it back in
soon enough.)
Step 2: Now turn on your Vita and go to the home screen.
Step 3: Touch the "Settings" icon.
Step 4: Touch "Start."
Step 5: Scroll down and touch the "Format" icon.
Step 6: Now touch the "Restore the PS Vita System" icon.
Step 7: You will now get a new screen telling you this will erase all data on your Vita. Touch "Restore."
Step 8: Touch "Yes" to deactivate your account.
Step 9: Touch "Yes" to continue.
Step 10: Touch "OK" when deactivation is complete.
Step 11: Sit back and watch it restore itself to the factory default.
Step 12: Touch and pull the corner of the screen.
Step 13: Select English for your language and hit "Next."
Step 14: Select your time zone and hit "Next."
Step 15: Select your date and time and hit "Next."
Step 16: Select "Yes, I do" and hit "Next."
Step 17: Select "Use" and hit "Next."
Step 18: Connect to your wireless internet by tapping on your wireless router.
Step 19: Enter your wireless network password (if it has one) and hit the enter key.
Step 20:
Enter the email address associated with your Japanese PSN account in
the top box. Enter your Japanese PSN account password in the lower box.
Then touch "Next."
Step 21:
If you have a credit card associated with your JPN account, you will
get the above message. Hit "Next" (the bottom right button) to confirm
this information.
Step 22:
In the second box from the bottom, enter your month and year expiration
date. In the box below that, put your credit card's security code
number. Then hit "Next" (the bottom right button).
Step 23: Your Vita is now linked with your Japanese PSN account. Hit "OK" to continue.
Step 24: Watch the Vita first time startup movie.
Part 3 – Formatting Your Memory Card

Step 1: Turn off your Vita and flip open the covering on its bottom right hand side.
Step 2: Take your Vita memory card and push it into the slot.
[*Note: If you have two memory cards, put the second one in now, not the first.]
Step 3:
Turn on the Vita. You should now be looking at a pop-up window saying
the Vita must be reset to use the memory card. Touch "Yes."
Step 4:
Now you will have a new window telling you your memory card is linked
with your non-Japanese account and telling you it must be formatted to
use with your Vita. Touch "Format."
Step 5: Touch "Yes" to confirm you really do want to format the card; wait for the memory card to finish formatting.
Step 6: Congratulations. You are now ready to play some Japanese Vita games.
Part 4 – Changing your Vita Back to Your Original PSN Account

So
you've played all the Japanese games you want to play and are eager to
get back to the latest games released in your region. Well, all you need
to do is repeat parts two and three of this guide. The only thing you
will need to do differently is log into your original PSN account
instead of your Japanese one at Part 2: Step 20 to switch your region
back. Then connect your Vita to your computer and restore the backup of your Vita you made back in Step 1 (or, alternatively, insert your original Vita memory card if you used two).

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Enjoy your time with your imported Japanese games. Stay tuned to Kotaku East for our guide detailing how to navigate the Vita's version of the Japanese PlayStation Store early next week.