nanopc t2 刷官方android操作系统，uboot 打印
DISP: W=1024, H= 600, Bpp=32
Failed to mount ext2 filesystem...
** Unrecognized filesystem type **
can't find bmp at 0x47000000 (type:0xffff), fb:0x46000000...
LOGO: DRAW FB=0x46000000, X=1024, Y= 600, Bpp=32
Hit any key to stop autoboot: 0
Failed to mount ext2 filesystem...
** Unrecognized filesystem type **
Failed to mount ext2 filesystem...
** Unrecognized filesystem type **
Wrong Image Format for bootm command
能否告诉我，出厂时 printenv 输出是什么
这个错误和执行了 fastboot erase 命令有关系么，如果有，如何恢复，
