Hello, prince777. Sorry for the very late reply. I wasn't able to check the forums for several months because of problems at work. I still have problems ... but a bit more time to goof around.
First, a bit of explanation. If you buy Garmin Mobile XT (which is on an SD card and comes with a detailed map), the product key is on the SD card. It will work with any GPS receiver that can connect to your device.
If you use the downloadable version of Garmin Mobile XT (from the Garmin website), it only comes with a worldwide base map (major roads only). Here's where the roadguide.ph map comes into play ... because it's free and doesn't need a product number to use. The (small) problem is, that version of GMXT will only work with Garmin GPS receivers. The solution is to use a crack so GMXT can "see" the non-Garmin receiver.
Google for the jetmouse keygen (at least v1.3). It basically puts your device's unique ID number as a text file which you have to put into the /Garmin folder. HTH