garmin north america city navigator 2010.40

**Midnight Blues** · 16th March 2010, 12:06 PM

Originally Posted by gamer1612

I am sorry for sounding like a noob but I am just really worried that I will brick my GPS. I have a Garmin nuvi 255w and want to update it to newer maps (it has maps 2010.10 right now) but I do not want to have to keep an SD card in it if I can avoid it. I would be fine installing via SD card if that is needed but would prefer to not need to keep the SD card in the GPS.

Which files should I download to do this the easiest way, and how would I go about doing it? Thanks very much in advance for your help.

1. Download IMG unlocked (3 parts) and unpack with WinRar or WinZip (not 7zip)
2. On your nuvi find Garmin folder and locate file gmapsupp.img (or gmapprom.img)
3. Backup file (copy to PC)
4. Rename file from downloaded rar same as original file (gmapsupp.img or gmapprom.img)
5. Overwrite old file on device with new file

That's all

gamer1612 · 16th March 2010, 02:46 PM

Originally Posted by Midnight Blues

1. Download IMG unlocked (3 parts) and unpack with WinRar or WinZip (not 7zip)
2. On your nuvi find Garmin folder and locate file gmapsupp.img (or gmapprom.img)
3. Backup file (copy to PC)
4. Rename file from downloaded rar same as original file (gmapsupp.img or gmapprom.img)
5. Overwrite old file on device with new file

That's all

Thanks, downloading now. Will post again if I have any problems. Is 2010.40 the newest?