用CRT下载文件到开发板时，进度不动
##### EmbedSky BIOS for SKY2440/TQ2440 #####Press Space key to Download Mode !
##### Boot for Nor Flash Main Menu #####
Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash
Download Eboot to Nand Flash
Download Linux Kernel to Nand Flash
Download CRAMFS image to Nand Flash
Download YAFFS image to Nand Flash
Download Program (uCOS-II or TQ2440_Test) to SDRAM and Run it
Boot the system
Format the Nand Flash
Set the boot parameters
Download User Program (eg: uCOS-II or TQ2440_Test)
Download LOGO Picture (.bin) to NandFlash
Set LCD Parameters
Download u-boot to Nor Flash
Reboot u-boot
Test Linux Image (zImage)
quit from menu
Enter your selection: 1
USB host is connected. Waiting a download.
Now, Downloading
RECEIVED FILE SIZE:222998 (217KB/S, 1S)
NAND erase: device 0 offset 0x0, size 0x40000
Erasing at 0x20000 -- 100% complete.
OK
NAND write: device 0 offset 0x0, size 0x3670c
Writing data at 0xf800 --29% complete.
这个是CRT中的操作和显示结果，恳求大虾帮忙，我特意用的开发板自带Uboot下载到我的256m NandFlash，屏为W35，谢谢 解决了么？
格式化nandflash，再烧写
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