Please try programming into a blank device a small test hex file containing 10 bytes of data using some kind of simple pattern, e.g. 0x01, 0x02, 0x03, etc.
Next use the display memory feature to display the contents of memory - please post a screenshot showing the 10 bytes.
Finally perform a verify. If this fails please send me a debug file showing the erase, program, read and verify.
Andy