我确保代码和bit流文件都是基于Ti60F225的,连接也没有问题,但是Efinity还是会出现The FPGA given in the bitstream file does not match the FPGA you are trying to program. Check that you are using the correct bitstream file.的报错。请问这是为什么?

我确保代码和bit流文件都是基于Ti60F225的,连接也没有问题,但是Efinity还是会出现The FPGA given in the bitstream file does not match the FPGA you are trying to program. Check that you are using the correct bitstream file.的报错。请问这是为什么?