JTAG Error

Hi all,

Please can anyone help me with this error,,,,thanks in advance

Error: Can't configure device. Expected JTAG ID code 0x020B40DD for device 1, but found JTAG ID code 0x020B60DD.

my board is DE2-70 cyclone 2

i read all the previous posts about this error and nothing help... dose someone have another idea how can i pass this problem