Downunder, I think I've read them all and found out post which similar to my case (
http://www.navitotal.com/showthread.php?9472-Old-TT-One-New-edition-which-recent-navcore-and-maps-will-work). as u suggested, I download NC 9.205 (SE_Navcore.9.205.547817_32mb_devices) but my original SD said it's full. so I tried using the new 16GB SD.
after I instal NC, the I instal middle east map 880.3823 (Middle East 880.3823_Installer.exe). But after finished installing, when I tried inserted SD into my tomtom one and turned it on, my device didn't recognize it (picture of crossed SD on the screen).
Did I do something wrong? Thanks for your help.