Unfortunately, the card has acknowledged their service after 5 weeks and denied any attempt at resuscitation. Why? No Idea! In any case, it was to swap the card from Amazon with a new one no problem. I hope I had just caught a committee and the jetztige card is working properly. Although Transcend offers a solution with the help of a program, but it requires forever to format a 64GB card, the data are then gone and I do not see that I should make the effort. They should kindly deliver regular goods! For people sensitive data which are so naive to pack on the card to make without a backup their map content data loss is annoying, even maybe a disaster. But to blame. For me, it was certainly no problem the content you want to move back to the new card.