Hello, I bought a second hand pioneer video wall and I found a Giada DN72 android box running on android 5.1.1 and I am now looking for the 7.1 version of the firmware.Does anybody know where I can find it?The Giada boxes are of superior quality with a metal house.I would say android tank boxes.Thank you.https://www.giadatech.com/DN72-RK3288-ARM-box