Just to clarify the above post....

From the Cyclops file in the first post, I extracted the two files named:

safety_camera_uk.gpi and
safety_camera_uk.unl

Then used the serial number from the Nuvi with the unlock generator, plus the four numbers inside the .unl file in the 'custom map' section, to generate an unlock number. Pasted this number into the .unl file and saved it.

Now copied the two files (.gpi and .unl) to the POI folder on the Nuvi.

However, Nuvi 205w does not appear to load the safety camera information. When pressing Where to>Extras> on the Nuvi, it says no extras are loaded.

Am wondering if the POI installer is needed to make this work?