I have a problem with my Mio C520 . I've made a unlock ( found on xtyler's page ) and I have installed Miomap v3 on the internal memory and I have Igo8 on a 1GB micro sd card . I use the micro sd card with a adapter . Now I have an SD card from SanDisk and the device dosen't see it . But if I go in Control Panel/Storage Manager there is on DSK 2 a SD card with 295 GB ( the Sd card has only 2 GB ) and all I try : format , new partition , defrag , scan dosen't work , I mean it's useless .