用C2Prog 烧写 TMS320f28034 时，出现Unlocking target... failed (wrong key)!
故障提示如下
*** PLEASE RESET TARGET IN SCI BOOT-LOADER MODE ***
Connecting with target (autobaud)... OK.
Bootloading... OK.
Please wait...
Connecting with target...
-Chip ID: 0xBB
-Chip Rev: 0x01
OK.
Unlocking target... failed (wrong key)!
请问这可能是什么原因造成的，要如何处理？谢谢
