Help Help Help. I am so confuse about the unlock, mapsource.

Thank God.
Finally i found this forum which i believe can help me out from the confusion.

For your info, i am using Garming Mobile XT
I have a malaysia and singapore map loaded in this device.
Now i would like to add some more map into my device, Initially, i have gone through all the tutorial. But it seem i cannot understand which stated there.

I hope the administrator could explain and answer my question below:

First,
i) How to install a new map into garmin mobile XT. I wanted to install Japana Street Nagivator

I hope sir, u can brief me out in simple step so that i could use the deivce to travel in japan.

Thank You

Why no body help me
??
i am scare i will get lost in japan later..

Now i already download the Japan road navigator English V2.1 routable (Unloaked Image)
and Locked mapsource (part 1 to 18)

But i cannot load it to the mapsource. What is going on here? Please advise
thx

please anyone can help me out.. i really appreciate...