Yes, shorting the pins I was switch the device into MaskRom mode and install Android. Now I trying to identify and use the debug console, not much success so far

Will check it when i back to PC, will be away from pc for around a week

I do get multiple warnings while compiling the DTS file, about 50-100 warnings similar to this: ttt.dts:1752.3-32: Warning (gpios_property): /usb0-vbus:gpio: cell 0 is not a phandle reference ttt.dts:1764.3-32: Warning (gpios_property): /usb1-vbus:gpio: cell 0 is not a phandle reference ttt.dts:1776.3-32: Warning (gpios_property): /usb2-vbus:gpio: cell 0 is not a phandle reference ttt.dts:1823.4-34: Warning (gpios_property): /leds/led-3:gpios: cell 0 is not a phandle reference ttt.dts:1828.4-34: Warning (gpios_property): /leds/led-4:gpios: cell 0 is not a phandle reference The phandles are in this kind of format on the dts file: phandle = <0x20>; phandle = <0xc2>; phandle = <0x1c>; phandle = <0xc3>; phandle = <0xc4>; phandle = <0x16>; phandle = <0xc5>; example: Note: the usb0 vbus was originally disabled but I enabled it as the pcduino3 nano has a single regulator for all ports and it is attached to usb0 apparently. In the closing section of __symbols__, I have redirected all 3 regulators to usb0. I believe that the fact it is disabled is because they don't recommend powering the board through the OTG port as it can cause voltage drops when connecting devices as host. My setup will be a gadget with a wifi dongle in a USB A port, so voltage drops should not be a concern, this is just my assumption... usb0-vbus { compatible = "regulator-fixed"; regulator-name = "usb0-vbus"; regulator-min-microvolt = <0x4c4b40>; regulator-max-microvolt = <0x4c4b40>; enable-active-high; gpio = <0x17 0x01 0x09 0x00>; status = "okay"; phandle = <0xc2>;

I'd start by comparing the device tree on a working and non-working image.