Quote Originally Posted by fracessco10 View Post
Hi, I am wondering if somebody experienced could help me with a simple question.

I have the Garmin City Navigator Europe 2011.10 NT maps (Map ID: 2204) on my Garmin nuvi 255w.

Are they are a lot of changes on the maps on the Garmin City Navigator Europe 2011.30/32 NT compare to version 2011.10?

And do I need to uninstall my 2011.10 map before install the 2011.30/32 map? I have tried without uninstall the old map but failed to unlock the map (furthermore, my old map got locked).

Thanks
You must remove it before copying it in your device, be sure to backup your old map and *.unl on you pc, then overwrite the unlocked img. You cant have 2 CN maps covering the same region.
To unlock it use Fast IMG unlocker
for more infos look at tutorial section