tiny6410在进行裸机程序烧写的时候，为什么Download and Run选项会出现Read USB Error Data not accepted by the board，但是程序会运行（led会亮），屏幕而且变白屏，但是install to Run NAND就可以正常运行。求大神解释！！！
附上FriendlyARM文件配置
#This line cannot be removed. by FriendlyARM(
www.arm9.net)
LCD-Type = S70
LCD-Mode=NO
USB-Mode=Yes
CheckOneButton=No
Action=Run
OS= Linux
VerifyNandWrite=No
StatusType = Beeper| LED
#################### Linux #####################
Linux-BootLoader = Linux/u-boot_nand-ram256.bin
Linux-Kernel = Linux/zImage
Linux-CommandLine = root=/dev/mtdblock2 rootfstype=yaffs2 init=/linuxrc console=ttySAC0,115200
Linux-RootFs-InstallImage = Linux/rootfs_qtopia_qt4.img
Linux-RootFs-RunImage = Linux/rootfs_qtopia_qt4.ext3
################### Android ####################
Android-BootLoader = Superboot-6410.bin
Android-Kernel = Android/azImage
Android-CommandLine = root=/dev/mtdblock2 rootfstype=yaffs2 init=/linuxrc console=ttySAC0,115200 androidboot.console=s3c2410_serial0
Android-RootFs-InstallImage = Android/rootfs_android.img
Android-RootFs-RunImage = Android/rootfs_android.ext3
################### WindowsCE6 #################
WindowsCE6-Bootloader= Superboot-6410.bin
WindowsCE6-BootLogo = WindowsCE6\bootlogo.bmp
WindowsCE6-InstallImage = WindowsCE6\NK-i.bin
WindowsCE6-RunImage = WindowsCE6\NK-i.bin
#################### Ubuntu #####################
Ubuntu-BootLoader = Superboot-6410.bin
Ubuntu-Kernel = Ubuntu/uzImage
Ubuntu-CommandLine = root=ubi0:FriendlyARM-root ubi.mtd=2 rootfstype=ubifs init=/linuxrc console=ttySAC0,115200
Ubuntu-RootFs-InstallImage = Ubuntu/rootfs_ubuntu-slc.ubi
Ubuntu-RootFs-RunImage = Ubuntu/rootfs_ubuntu.ext3
############### UserBin #################
UserBin-Image=WindowsCE/NK-i.nb0
userBin-StartAddress=50100000
