在CCS5.2下烧写TMS320F2812FLASH一直报错

用合众达仿真器seed-xds510在ccs2.2下烧写flash成功，但用seed-xds560v2在ccs5.2下就仿真可以，烧写不成功，一直报错如下：
C28xx:Flash Programmer: Eroor erasing Flash memory.
C28xx: Flash operation timed out waiting for the algorithm to complete. Operation cancelled.
c28xx: trouble wring memery block at 0x3f706c on page 0 of Length 0x16.
c28xx: Gel:Flile:C:2Debug2.out: Load Failed.

求问如何解决CCS5下的此烧写问题？