Part Number: TMS320F28388D
Other Parts Discussed in Thread: TMDSCNCD28388D
Through the emulator, download the program to the circuit board, showing that the download is unsuccessful. details as following:

The circuit board is designed to imitate TMDSCNCD28388D. The first version of the design has a problem. Every time the program runs, you need to press the reset button before it can run.
The second edition of the design, imitating the TMDSCNCD28388D design the boot selection circuit. When both GPIO72 and GPIO84 are in the high state, the downloaded program will run the program from FLASH.
However, this version has a new problem. When downloading the program, it cannot be downloaded, and the situation in the picture above always appears.
I am very anxious, and I don’t know what caused it. I’m here to ask, thank you.
