Here is the instruction for importing/exporting/transferring data file from OBDSTAR DC706 tablet to PC.
Insert a USB Disk into the USB port of the DC706 tablet.
Go to Home menu, press DP icon.
Go to Data Management->My Data->Local Data
Tick files you need to transfer
Long press files you need to transfer and press Copy
Paste Files to USB Disk.
If the device says copy successfully, remove USB disk after 10 seconds.
If you modify the data and rewrite with DC706, you should do checksum correction manually. In this case DC706 won’t correct checksum for modified data.