====== How to edit the System Configuration ======

If someone want to add gpio pin or uart without compile the source code.The sunxi-tools can help you.

===== Android =====
At first You may need fex2bin and bin2fex:
  $ git clone git://github.com/linux-sunxi/sunxi-tools.git
  $ cd sunxi-tools
  $ make
  $ With the using of ls, you can find the fex2bin and bin2fex.

Second copy the script.bin from Android OS:
  $ adb shell
  $ mkdir /mnt/tmp
  $ mount -t vfat /dev/block/nanda /mnt/tmp
  $ exit
  $ adb pull /mnt/tmp/script.bin 
Note : Attention it's different from Linux.

Then convert the script.bin to script.fex:
  $ chmod 777 script.bin
  $ ./bin2fex script.bin > ./script.fex
  $ gedit script.fex

Now, you can edit the script.fex. Don't forget saving the file when you leave it.

Finally,convert the script.fex to script.bin and push it back to the CB
  $ ./fex2bin script.fex > ./script.bin
  $ adb push script.bin /mnt/tmp
  $ adb shell
  $ umount /mnt/tmp
  $ reboot
It will restart the CB. The new script.bin will come into effect.


===== Linux =====
You can edit the script.bin directly\\
Firstly, you must connect network and install compilation Tools:
  $ git clone git://github.com/linux-sunxi/sunxi-tools.git
  $ cd sunxi-tools
  $ make
With the using of ls, you can find the files: fex2bin and bin2fex.

Copy the script.bin.(boot from sdcard):
  $ mkdir /mnt/mmcp1
  $ mount /dev/mmcblk0p1 /mnt/mmcp1  (the script.bin is in /dev/nanda if you boot from nand )
  $ cp /mnt/mmcp1/script.bin ./
  
Convert the script.bin to script.fex:
  $ chmod 777 script.bin
  $ ./bin2fex script.bin > ./script.fex
  $ vi script.fex
Now, you can edit the script.fex.Don't forget saving the file when you leave it.

Convert the script.fex to script.bin and push it back.
  $ ./fex2bin script.fex > ./script.bin
  $cp ./script.bin /mnt/mmcp1/
  $umount /mnt/mmcp1
  $reboot
It will restart the CB. The new script.bin will come into effect.

**Note**:When the script.bin is invalid.You must enter the u-boot command line and input
  $setenv boot_normal fatload nand 0 43000000 script.bin\;boota 40007800
  $saveenv
  $reset