LAN Orange LED is PWR LED
J1 1-2 Short is Disable eMMC Boot (2 is GND
J1 3-4 Short is Supply USB 5B VBUS
J2 1 is ACT LED Anode(2 is GND Kathode
J2 3-4 Short is Supply USB 5B VBUS
Rewriting eMMC
Short J1 1-2
Open J1 3-4
Connect PC to OTG Connector use TYPE A-A cable
https://github.com/raspberrypi/usbboot/tree/master/win32
https://github.com/raspberrypi/usbboot/tree/master
https://www.raspberrypi.com/software/
