Is your map better than the below one please ?
Garmin MapmyIndia- Satguide 620 cities MMI v4.01(1-12-09) noeman.org/gsm/garmin-maps/123152-garmin-mapmyindia-satguide-620-cities-mmi-v4-01-a

The reason i ask is seeing the size of the files, many thanks.