1. Choose a board doing: ./build.sh,

2. Choose a board doing

"This tool supports the following BPI board(s):"

************************************************"

1. BPI_M2_720P"

2. BPI_M2_1080P"

3. BPI_M2_LCD7"

4. BPI_M2_USB_720P"

5. BPI_M2_USB_1080P"

6. BPI_M2_USB_LCD7"

*************************************************"

Step 1.To be on safe side erase the first part of your SD Card (also clears the partition table).

   sudo  dd if=/dev/zero of=${card} bs=1M count=1

Step 2.Go to folder "Download", put the file(s) to 100MB of the SD Card whit DD command.

 sudo dd if=boot0_sdcard.fex     of=${card} bs=1k seek=8

sudo dd if=u-boot.fex 	        of=${card} bs=1k seek=19096

sudo dd if=sunxi_mbr.fex 	of=${card} bs=1k seek=20480

sudo dd if=bootloader.fex 	of=${card} bs=1k seek=36864

sudo dd if=env.fex 		    of=${card} bs=1k seek=69632

sudo dd if=boot.fex 		of=${card} bs=1k seek=86016

You may go to http://www.banana-pi.org to download Ubuntu15.04 images and burn them into the Sdcard to see the architecture.

##Reference [Building a Minimal System with BPI-M2] (http://forum.banana-pi.org/t/building-a-minimal-system-with-bpi-m2/324).