CC3200 通过CCS UniFlash 烧录程序失败，附上烧录信息。请帮忙查看下原因。
[15:27:00] Begin Format operation.
[15:27:01] INFO: > Executing Operation: Connect
[15:27:03] INFO: setting break signal
[15:27:03] INFO: --- please restart the device ---
[15:27:03] INFO: connection succeeded
[15:27:03] INFO: getting storage list
[15:27:03] INFO: > Executing Operation: Init
[15:27:03] INFO: reading version info
[15:27:03] INFO: DEVICE CC3200 ES1.33
[15:27:03] INFO: reading version info
[15:27:04] INFO: reading version info
[15:27:06] INFO: > Executing Operation: Format
[15:27:06] INFO: Erase storage SFLASH
[15:27:06] INFO: erase storage failed
[15:27:06] INFO: erase storage completed
[15:27:06] INFO: > Executing Operation: Disconnect
[15:27:06] Operation Format returned.
[15:28:04] Begin Program operation.
[15:28:05] INFO: Checked for update config groups: []
[15:28:05] INFO: List of files to be generated: []
[15:28:05] INFO: > Executing Operation: Connect
[15:28:07] INFO: setting break signal
[15:28:07] INFO: --- please restart the device ---
[15:28:07] INFO: connection succeeded
[15:28:07] INFO: getting storage list
[15:28:07] INFO: > Executing Operation: Init
[15:28:07] INFO: reading version info
[15:28:07] INFO: DEVICE CC3200 ES1.33
[15:28:07] INFO: reading version info
[15:28:08] INFO: reading version info
[15:28:10] INFO: > Executing Operation: Program
[15:28:10] INFO: > File name: /sys/mcuimg.bin, Update: true, Erase: true
[15:28:10] INFO: > Erase File: /sys/mcuimg.bin
[15:28:10] INFO: erasing file "/sys/mcuimg.bin"
[15:28:10] INFO: deleting file "/sys/mcuimg.bin"
[15:28:10] INFO: erase file completed
[15:28:10] INFO: > Size of file = 13400
[15:28:10] INFO: > Update File: /sys/mcuimg.bin
[15:28:10] INFO: Downloading file "/sys/mcuimg.bin" with size 13400
[15:28:10] ERROR: Open operation failed
[15:28:10] INFO: > Executing Operation: Disconnect
[15:28:10] Operation Program returned.
