In a Garmin root folder of SD card, your device can only read detail maps named as gmapsupp.img and gmapsup1.img [latter name works in the software version issued from Nov 2012 onwards, either V4.10> or V7.60> depending on HWID of your 260W]. Of course the maps need to be either properly unlocked or officially purchased. However, gmapprom.img naming is not recognized for SD card, it only works directly for maps on the unit itself for all Series 2 nuvi devices. Nor can it recognize or use naming of gmap3d.img which is used for 3D Building and Landmarks map for the 7x5 series and many other later devices. Because of GMA protection in later software, older unlockers may not be effective.
Bookmarks