Specifications

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2. Copy the files MLO, u-boot.bin, x-load.bin.ift_for_NAND,
flash-uboot.bin, uImage and ubi.img from \linux\image on the
DVD-ROM to the SD card;
3. Insert the SD card into the SBC8140 and power it on; when the
information on the serial interface shows a countdown in
seconds, press any key on your PC’s keyboard to enter u-boot
mode;
Hit any key to stop autoboot: 0 (press any key to enter u-boot mode)
4. Type run updatesys and press the Enter key to start the
system update;
5. When the LEDs on the kit start to blink, the update is
completed; please remove the SD card and reboot the system;