After updating firmware or maps make a reset. Backup personal data first.
My Nuvi 2585TV originally had CN Europe NTU 2012.30 ALL. When I transfer newer maps to the device or SD card, it recognizes the map perfectly, but when I do an address search, as soon as I press the first letter the device becomes very slow, I have to wait 2 or 3 minutes to enter the following letter. If I go back to the main menu, I have to wait another 2-3min and then it behaves normally.
I already tried NT and NTU maps, unlocked images and pc installed (via basecamp+mapinstall), SD card and device memory. Turned off all unnecessary functions. Can't figure what is wrong.
If I put the original map everything works fine.