After installing the last firmware update (86), all I get is a white screen. I have tried both the STM32 Cube and DfuSeDemo programmers. After shorting the VDD and Boot0 pins it goes into dfu mode ok but when I try to program with DfuSeDemo? it completes with no error message but the Cube programmer shows the error below.? I have tried several older versions with no change. The unit was purchased from R&L Electronics so it should be legit.
? 11:55:59 : Download in Progress: ? 11:55:59 : Error: failed to download Segment[0] ? 11:55:59 : Error: failed to download the File ? 11:55:59 : RUNNING Program ... ? 11:55:59 : ? Address: ? ? ?: 0x08000000 ? 11:55:59 : Start operation achieved successfully