AW: It may happen that the file system of the memory stick got damaged, or that the file allocation table of the data carrier is defect due to erroneous write cycles. There may be different reason for this to happen, such as usage or storage of data carriers and problems occurring at the initial format process.

In such cases, you must perform a full format with your PC or notebook, to make it work correctly again.

Info: If the data carrier after formatting is still not recognized by the device, it may be due to an incompatibility of the disk controller chip itself. In such a case, you should use a different USB data carrier of another brand or manufacturer.