为什么LATTICE官方的crosslink开发板在擦除了一下片外FLASH后就再也烧不进去程序了？

我买了一块LATTICE官方名字叫作CrossLinkLIFMD6000MasterLinkBoard的DEMO板，在我整片擦除了片外的FLASH后想重新再烧录时，却始终报如下错误：

INFO - Check configuration setup: Successful (Ignored JTAG Connection Checking).

INFO - Device1 LIF-MD6000: SPI-M25PX16: SPI Flash Erase,Program,Verify

Initializing…

IDCode Checking…

Enabling…

Erasing…

ERROR - Failed at Address h00000000
Status Register Bit Expected: h00 Actual: hFF

Failed to Erase the sector address h00000000. The sector could be secured.

ERROR - Operation: unsuccessful.

ERROR: pgr_program failed.

ERROR - Programming failed.