MY base map is AMR Autoroute Basemap NR 2.00 (I got it from toos-settings-system-about-detailed maps) I dont find any gmapbmap.img in .system folder. I actually oredered this from US and got my map from satguide,

GR8 Finally I got it. Powered by city Xplorer. Thanks tonstons, I'm really happy, have been working since morning. I put my SD card ID and it is working, thanks.

But chennai city Xplorer is ridiculous, the route options have only train and walk, no bus transport (anyway the map I have is 2010). ANyway I'm happy. Any latest explorer maps