I have installed the Flashtool1.6 on my machine, then I make image of jffs2 filesystem with the command "mkfs.jffs2 -lqnp -e 128 -r $HOME/filesystem -o jffs2_image_file.jffs2", and then use the flashtools to download the image to nandflash , When first boot , it will run well and could rund the qtdemo . but when I reboot the device it will show a lot of "mtd->read(0x814 bytes from 0x394ffec) returned ECC error", sometime it can login in . How I could get rid of those lot of messages of ECC?