I just bought a Garmin nuvi 3790T from Taiwan and have alot of questions in my mind that I need help with. I hope someone could enlighten me.

I'm currently based in Taiwan but I would like to have full function of Singapore's map and POI and stuff.

I currently already downloaded City Navigator Maps for SG/MY and Malsingmaps for SG/MY

It works from the address I input. But I realised all the Points of Interests categories show blank

Am I doing something wrong? Or do I need to do something to add the POIs?

Should I try to convert my unit to a SG firmware instead?