周公,请教烧写问题

error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;0&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;1&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;2&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;3&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;4&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;5&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;6&nbsp;write&nbsp;failed!<br />error&nbsp;0xffffffff!&nbsp;Flash&nbsp;Sector&nbsp;7&nbsp;write&nbsp;failed!<br />Flash&nbsp;Sector&nbsp;8&nbsp;Agent&nbsp;Download&nbsp;failed!<br />Flash&nbsp;Sector&nbsp;9&nbsp;Agent&nbsp;Download&nbsp;failed!<br />我在烧写时候遇到的,请教是怎么回事,应该怎么处理?硬件我检测过没有问题的.小弟急!!!!!

  

自己做的开发板吗？<br />有没有先擦除？检查复位正常否？