What to do if the display show the "file not found"?
1. Check the format of the USB driver. Make sure it is FAT32.<br>
2. Make sure that you are not using the old X-Sign designer format to play with the X-Sign player v1.5 or later.<br>
3. You can just rename the filename extension from xxx.bdp to xxx.sbdp on Windows OS.<br>
(Click the right button of mouse on the file then choose the "rename" function on the function bar.)
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