4
3)
Press and hold down the recovery button and then press power
button to enter recovery mode.
2.
To Flash Image
2.1.
Flash Image to Board
1)
Type [Ctrl] + [Alt] + [t] to open terminal on Ubuntu Host PC.
2)
Enter the bootloader folder that you unzip.
3)
Execute flashall.sh to flash image.
$ sudo ./flashall.sh
Recovery Button
Power Button