You need 8 GB SD CARD (trusted brand) and 7zip to unzip the file and use Win32diskImager to write it to SD CARD.
Default Image:
eth0 enabled
HDMI 720p
Wifi is no managed so to enable Wifi, WPA_SUPPLICANT is used to connect Wifi to AP, please edit /etc/network/interfaces and add/change the values to your AP:
If you want to build your own Image, you need access to BPI private github with the BPI patches and the fix i have mentioned on Issues along with a working sys_config.fex for the M2P.
Use a heatsink, idle Temp after an hour without passive cooler is 68C ~ 70C when Wifi is in use.