拿到手的板子就這樣，無法下載，MRS和下載工具都是一樣的報錯，boot0拉高也沒法解決，報錯如下

10:18:34:840 >> Current project vendor is WCH, debugger is WCH-Link

10:18:34:841 >> Starting to Open Link in RISC-V APP mode...

10:18:34:902 >> Open Link in RISC-V APP mode Success

10:18:34:902 >> Starting to get link mode...

10:18:34:904 >> Link is under APP mode

10:18:34:904 >> Starting to compare firmware version...

10:18:34:907 >> No need to update. Already the latest version. Version is v2.3.

10:18:34:908 >> Starting to Send Chip Type...

10:18:34:948 >> Board chip status error

Board chip status error

10:18:34:948 >> Starting to Close Link...

10:18:34:948 >> Close Link Success

好吧解決了，是芯片燒了