==User Manual==
https://github.com/raspberrypi/documentation
[https://github.com/raspberrypi/usbboot/raw/master/win32/rpiboot_setup.exe Rpi-boot Windows installer]
[https://github.com/raspberrypi/documentation/blob/master/hardware/computemodule/cm-emmc-flashing.md CM4 emmc flashing]