setup a tftp server on 192.168.1.254 which has its file location within the gw2388 binaries directory


sete ipaddr 192.168.1.1
sete serverip 192.168.1.254
tftpboot 0x100000 uboot.bin
erase 0x10000000 +$(filesize)
cp.b 0x100000 0x10000000 $(filesize)
reset

ensure that all steps are made correct, otherwise you may need to recover your board using jtag :-)