If a problem occurs and your data is lost, you will be able to restore the original state by reloading the data you saved. We recommend that you save your data to a USB Flash Memory before you perform the update.After expanding the file, the folder ' td15_sys_v114' holding the file ' TD15TD11.BIN' will appear. It is an archive file in zip format, please double click on the file to expand. Download the file named 'td15_sys_v114.zip'.