提示是下面这个错误
> Verifying section [8000000-807FFFF] of PROGRAM MEMORY area...
Error : Verify failed at address 0x8000402.
Check that the device is erased before programming
==> Reset done, device Running...
Error : < PROGRAM MEMORY verifying failed.
Error : < Operation aborted.
楼主用Flyl MCU一样的处理方式，但没对boot引脚进行操作。将IAP生成的hex文件去掉最后一行的结束指令，然后将工程文件生成的hex里的内容全部复制到IAP的hex文件中（替换原IAP的hex最后一行）。