If this issue is related to the specific board. The program SW(flash program algorithms) and CWTAP connection should work correctly.
It may related to the specific component(such as the flash) or the assemble issue of this board.
You could run the "Diagnose Connection" to check the other function of the LX2080 to confirm if the LX2080 work well.
You could test the signals of the flash when programming to check which signal is not correct.
But just I said before
What your boot mode now? Hard-Code or flash? If boot from the flash, you could connect the CWTAP, the RCW works correctly, it will be supposed the flash loading correctly because the RCW are loaded correctly from the flash.
You could also address your question in Chinese.
Thanks