关于连接超时

mini2440的板子
我按要求练好串口线 电源等
准备传送内核映像
vivi里面显示 usb host is connected  Waiting a download
但是传送时却总是出现连接超时
这是为什么

启动信息  来自超级终端
Backup NAND Flash to HOST through USB(upload)
[r] Restore NAND Flash from HOST through USB
[q] Goto shell of vivi
Enter your selection: b
Copy linux kernel from 0x00050000 to 0x30008000, size = 0x00200000 ... done
Warning: this binary is not compressed linux kernel image
zImage magic = 0xffffffff
Setup linux parameters at 0x30000100
linux command line is: "noinitrd root=/dev/mtdblock2 init= nuxrc console=ttySA
C0"
MACH_TYPE = 782
NOW, Booting Linux......

然后就没反应了
这是为什么？

[ 此帖被520gya在2011-01-26 15:18重新编辑 ]

建议你下载使用新的supervivi，你的也太老了吧