Thread: Nuvi 255W

Originally Posted by stephann

I have a Nuvi 255W, just recently updated with Garmin Express.

Originally Posted by catymag

I guess you have the latest firmware in nuvi

For nüvi 255W, FW 5.10 or later is required to recognise map files larger than 2 GB. Although you say you have updated the device via Garmin Express, please confirm which FW version is loaded in your device.

The SD card was formatted to FAT32, and I have reloaded the map with file name 'gmapsupp.img' into a Garmin file on the SD card. I have removed the original maps and backed them up. According to The Garmin Express updater the FW is 7.8