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Set the S3 DIP switch to eMMC boot and press reset.
Pre-programmed SOMs:
Pre-programmed SOMs (bootloader/custom_image on eMMC) can be ordered from Solid-Run for high volume (programming will be done during the production test process).
It is possible to order SOMs from Solidrun with preprogrammed General/Custom bootloader on eMMC and then you can load the Linux & FS over USB-Disk / Ethernet (TFTP/DHCP) and then program the custom image from Linux…