改程序时，不知道把cmd文件哪里改错了，把芯片的flash给锁死了，怎么办
     这个是再次给flash里下程序的报错：
     C28xx: Flash Programmer: Error erasing flash memory. Device is locked or not connected. Operation cancelled
     C28xx: Flash Programmer: Error erasing Flash memory.
     C28xx: Flash Programmer: Device is locked or not connected. Operation cancelled.
     C28xx: Trouble Writing Memory Block at 0x3f6380 on Page 0 of Length 0x16
     C28xx: GEL: File: C:UsersAdministratorworkspace_v5_1aa_2Debugaa_2.out: Load failed.