How to boot BeagleBone Black with Android?

Hi,
I have the BBB REV A5B, and I am trying to install android on the board with no success.
when I enter the SD card to the board and press the boot button, I get nothing from the leds, they are not blinking…
can someone please give me an answer how to boot properly?
I already tried to load the “BBB-aosp-4.4.4_r1-sd” and “BBB_JB_Android_3_8_13” images, with no success.

thank you,
Asaf