The Map is unlocked already. (You must download the FID800 Map to make things easier)
You need to create a jetmouse 1.5 unlock code with fid 800 pid 1,0,0 and this will unlock the "Enhanced Pedestrian Mode" in your Nuvi.
You need to type in your unit id as well.
Paste the long number into notepad and then save it with the extension .unl (beware windows will try to save it as .unl.txt).
Filename of map IMG must be Exactly the same as Filename of UNL (EG CX_am.img CX_am.unl )
De-select all other Maps in your Nuvi except the CX Map and restart Nuvi (Just in case of conflicts.)
Place the unlock code in the same folder as your map. SDCARD /Map
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