They provide a variety of free software for universal boards. You can browse their TP.VST59S collection for compatible PB802 dumps.
Typically done via USB (insert drive and power on) or using a programmer like the RT809F via the VGA ISP port. Download TP.VST59S.PB801 All software for free - Facebook Download VST59S PB802 1366x768 Backup Dump rar
Usually provided as a .bin file inside a .rar or .zip archive. They provide a variety of free software for universal boards