Used another (Kingston) 8GB SD card with the same results. dct is there etc., soft reset TT, but only the active Benelux map on the internal mem is found when I look in the Select/Change map When I connect to my Win10 pc can access the SD Card so the TT cardslot and SD card are both ok. Now I'm trying to get Western Europe 1100.11648 working on a 8GB SD card (yes: its FAT32)-> put map on SD card added ttgo.bif + Fastactivate, ran it -> all ok. So I did a factory reset removed all files from internal memory, did a clearflash, rebuild Navcore with Universal Navcore Installer, downloaded Benelux 1100.11649 map here, put extracted map on the internal mem, ran Fastactivate to patch Navcore and map -> all good and working fine. It hadn't been used since 2018 and the map on it was not working/activated. Now have an issue with a Go 740 Live I received as a gift after my 5100 was stolen. Been lurking around here for info and tools ever since the TT ONE I owned was new.