Obviously, I'll try that. As a newbie, I didn't even know there is such an easy 'unlocker' for maps, so your help has saved me some good hours of reading and experimenting, my sincere thanks to you.
For the Aus/NZ map, the JCV really functions perfectly. I could see all the junction pictures (wherever available) without fail. Will try out things tomorrow.

Edit:

I unlocked all the maps but this does not help.

I also downloaded the EU 2011.32 maps with JCV. Like the Aus/NZ pair, they work fine in my nuvi. Could that be a regional problem or what. Actually I bought my nuvi in the US but use it in Asia. With the help of dvazg I flashed the RGN to 1340-65 which should have addressed the problem, but no luck here.