BASYS演示不工作

嘿伙计们我是学生，我有Basys FPGA Xilinx Spartan 3E FPGA，-250裸片
（XC3S250E-TQ144）。
基本上我不小心从发送的FPGA附带的ROM中删除了演示
我想重新加载它。
我从Digilent网站上下载了它，我似乎无法编程
.bit文件到FPGA。
我正在使用Adept ExPort。
我得到一个错误信息，告诉我有一个IDCODE错误。
我使用XILINX进入了项目并查看了详细信息。
我注意到设置的目标设备是
XC3S100E-TQ144而不是XC3S250E-TQ144。
所以我改变了，然后我试着
生成编程.bit文件，我得到一个地方和路线错误说：
错误：位置：1018  - 已发现时钟IOB /时钟组件对未放置在最佳时钟IOB /
有人可以帮我重新加载演示文件到FPGA吗？
任何帮助是极大的赞赏。



以下为原文

Hey guys i am a student and i have the Basys FPGA Xilinx Spartan 3E FPGA, -250 die (XC3S250E-TQ144).
Basically i accidentally erased the demo from the ROM which the FPGA came with when it shipped
and i want to reload it. I went and downloaded it from the Digilent website and i cannot seem to program the
.bit file to the FPGA. I am using Adept ExPort. I get an error messege telling me that there is a IDCODE error.
I went into the project using XILINX and looked at the details. I noticed that the target device which was set was
the  XC3S100E-TQ144 and not the one i have which is XC3S250E-TQ144. So i changed that and then i tried to
generate the programming .bit file and i get a place and route error saying this:

ERROR:Place:1018 - A clock IOB / clock component pair have been found that are not placed at an optimal clock IOB /

Can someone help me to reload the demo file to the FPGA? Any help is greatly appreciated.