正在BeagleBoardBlack上运行TI的SDK，在使用uboot的tftp命令时出现问题

我已经将tftp服务器ip地址设置为192.168.1.210，但是在使用tftp下载镜像时怎么地址还是192.168.1.1？

=> printenv serverip
serverip=192.168.1.210
=> tftp 0x82000000 zImage
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.1; our IP address is 192.168.1.203
Filename 'zImage'.
Load address: 0x82000000
Loading: T T T T T T T T T T T T T T T T T T T T 
Retry count exceeded; starting again