"nandupdate=nand erase 0 0x00100000 &&" \
"tftpboot $second_image && " \
"nand write $loadaddr 0 0x00020000 && " \
"tftpboot $third_image && " \
"nandupdate=nand erase 0 0x00100000 &&" \
"tftpboot $second_image && " \
"nand write $loadaddr 0 0x00020000 && " \
"tftpboot $third_image && " \