1. How to flash the emmc from MicroSD
Download the image from https://beagleboard.org/latest-images
Write the image with “Win32 Disk Imager”
To turn these images into eMMC flasher images.
Edit the /boot/uEnv.txt file on the Linux partition on the microSD card and remove the ‘#’ on the line with ‘cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh’. Enabling this will cause booting the microSD card to flash the eMMC. Images are no longer provided here for this to avoid people accidentally overwriting their eMMC flash.